/* roulang page: index */
:root{
  --primary:#D8FF3E;
  --primary-rgb:216,255,62;
  --accent:#FF7A2D;
  --cyan:#00E0C6;
  --bg:#0B0E12;
  --panel:#12161B;
  --card:#171C23;
  --line:rgba(255,255,255,.08);
  --text:#F2F4F7;
  --muted:#9AA3B2;
  --dim:#5D6470;
  --r-lg:24px;
  --r:16px;
  --r-sm:10px;
  --shadow:0 10px 30px rgba(0,0,0,.22);
  --shadow-hover:0 20px 50px rgba(0,0,0,.4),0 0 0 1px rgba(216,255,62,.18);
  --font:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans SC",system-ui,sans-serif;
  --wrap:1180px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  min-height:100vh;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:var(--text);text-decoration:none;transition:color .25s ease,border-color .25s ease}
a:hover{color:inherit}
button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit;font-size:inherit}
ul,ol{list-style:none}
input,select,textarea{font-family:inherit}
h1,h2,h3,h4,h5{line-height:1.2;font-weight:700}
.container{max-width:var(--wrap);margin-inline:auto;padding-inline:24px}
.section{padding-block:110px}
.section-tight{padding-block:72px}
@media(max-width:1023px){.section{padding-block:80px}}
@media(max-width:767px){.section{padding-block:64px}.container{padding-inline:18px}}
a:focus-visible,button:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
  border-radius:8px;
}
::selection{background:rgba(216,255,62,.3);color:#fff}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;line-height:1;border-radius:999px;
  padding:14px 30px;font-size:.95rem;
  transition:transform .3s ease,box-shadow .3s ease,background .3s ease,color .25s ease,border-color .25s ease;
  cursor:pointer;white-space:nowrap;user-select:none;border:1px solid transparent;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--primary);color:#0B0E12;font-weight:700}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(var(--primary-rgb),.18)}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--text);border-color:rgba(255,255,255,.12);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);transform:translateY(-2px)}
.btn-lg{padding:18px 42px;font-size:1.02rem}
.btn-sm{padding:10px 18px;font-size:.85rem}
.btn-block{width:100%}
.btn-dark{background:#20272E;color:#fff}
.btn-dark:hover{background:#2c3640;transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.25)}

/* ===== Nav ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding-top:14px;padding-inline:clamp(14px,3vw,36px);
}
.nav-wrap{max-width:1440px;margin-inline:auto}
.nav-panel{
  background:rgba(11,14,18,.72);
  border:1px solid var(--line);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-radius:999px;
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 12px 10px 14px;gap:20px;
  box-shadow:0 18px 60px rgba(0,0,0,.38);
}
.brand{display:flex;align-items:center;gap:11px;padding:6px 10px 6px 2px;flex-shrink:0;border-radius:18px}
.brand-mark{
  width:38px;height:38px;border-radius:12px 12px 12px 3px;
  background:var(--primary);color:#0B0E12;display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:900;line-height:1;
  flex-shrink:0;font-family:Georgia,"Times New Roman",serif;
}
.brand-name{
  font-size:1.08rem;font-weight:800;letter-spacing:.02em;line-height:1.2;
  color:#fff;white-space:nowrap;display:flex;flex-direction:column;
}
.brand-name small{font-size:.64rem;font-weight:400;color:var(--muted);letter-spacing:.16em;margin-top:2px}
.main-nav{display:flex;align-items:center;gap:3px;margin-inline:auto;flex-wrap:nowrap}
.nav-pill{
  display:inline-flex;align-items:center;gap:7px;padding:9px 15px;
  font-size:.87rem;font-weight:500;color:var(--muted);
  border-radius:999px;transition:background .25s ease,color .25s ease;line-height:1;
  white-space:nowrap;
}
.nav-pill svg{width:15px;height:15px;flex-shrink:0;opacity:.8}
.nav-pill:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-pill.active{background:rgba(216,255,62,.13);color:var(--primary);font-weight:600}
.nav-pill.active svg{opacity:1}
.nav-pill::after{
  content:"";display:block;height:1px;background:var(--primary);width:0;transition:width .25s ease;margin-top:-1px;
}
.nav-pill:hover::after{width:100%}
.nav-pill.active::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-cta .btn{padding:9px 20px;font-size:.84rem}
.nav-toggle{
  width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.06);
  border:1px solid var(--line);display:none;align-items:center;justify-content:center;
  flex-shrink:0;color:var(--text);
}
.nav-toggle:hover{background:rgba(255,255,255,.1)}
.nav-toggle svg{width:18px;height:18px}

@media(max-width:1180px){
  .nav-pill{padding:8px 11px;font-size:.8rem}
  .brand-name{font-size:.98rem}
}
@media(max-width:1023px){
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:absolute;top:calc(100% + 12px);left:0;right:0;
    background:rgba(11,14,18,.96);border:1px solid var(--line);border-radius:24px;
    padding:18px;flex-direction:column;align-items:stretch;gap:6px;
    backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);
    box-shadow:0 24px 60px rgba(0,0,0,.5);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .3s ease,transform .3s ease,visibility .3s;
  }
  .main-nav.open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-pill{
    justify-content:flex-start;padding:13px 16px;border-radius:14px;font-size:.94rem;
    background:rgba(255,255,255,.03);margin-bottom:2px;
  }
  .nav-pill:hover,.nav-pill.active{background:rgba(216,255,62,.12);color:var(--primary)}
  .nav-pill.active::after{display:none}
  .nav-panel{border-radius:30px}
}

/* ===== Hero ===== */
.hero{
  position:relative;
  padding:190px 0 90px;
  overflow:hidden;
  background:
    radial-gradient(ellipse 70% 50% at 85% 10%,rgba(0,224,198,.06),transparent),
    radial-gradient(ellipse 50% 60% at 8% 60%,rgba(216,255,62,.05),transparent),
    var(--bg);
}
.hero::before{
  content:"";position:absolute;inset:0;opacity:.25;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(ellipse 80% 70% at center,#000 40%,transparent);
}
.hero-inner{position:relative;display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:48px;align-items:center}
.hero-copy{max-width:600px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:rgba(216,255,62,.08);
  color:var(--primary);border:1px solid rgba(216,255,62,.18);padding:7px 15px;border-radius:999px;
  font-size:.75rem;font-weight:600;letter-spacing:.08em;margin-bottom:26px;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--primary);display:inline-block;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.8)}}
.hero-title{
  font-size:clamp(2.8rem,7vw,5.1rem);
  line-height:.99;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero-title .line-1{
  color:var(--primary);
  display:block;
  font-size:clamp(2.1rem,6vw,4.5rem);
}
.hero-title .line-2{display:block;color:var(--text);font-size:.66em;letter-spacing:-.01em;margin-top:10px;font-weight:800}
.hero-desc{
  font-size:1rem;color:var(--muted);line-height:1.85;margin-bottom:30px;max-width:480px;
  border-left:3px solid var(--primary);
  padding-left:18px;
}
.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:32px}
.trust-tags{display:flex;flex-wrap:wrap;gap:12px 20px;border-top:1px solid var(--line);padding-top:22px}
.trust-tags span{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;color:var(--muted);font-weight:500}
.trust-tags span::before{
  content:"";width:6px;height:6px;background:var(--cyan);border-radius:50%;flex-shrink:0;
}

/* hero visual */
.hero-visual{
  position:relative;display:flex;justify-content:center;align-items:center;
  min-height:520px;
}
.hero-orbit{
  position:absolute;width:min(430px,97%);aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle,rgba(216,255,62,.08) 0%,transparent 65%);
  border:1px dashed rgba(216,255,62,.14);animation:spin 26s linear infinite;pointer-events:none;
}
@keyframes spin{to{transform:rotate(360deg)}}
.phone-mock{
  width:min(300px,78vw);
  aspect-ratio:9/16.2;
  border-radius:34px;
  background:#0B0E12;
  border:1px solid rgba(255,255,255,.2);
  box-shadow:0 0 0 10px rgba(0,0,0,.25),0 0 0 11px rgba(255,255,255,.06),0 28px 80px rgba(0,0,0,.7);
  position:relative;z-index:2;overflow:hidden;
  display:flex;flex-direction:column;
}
.phone-screen{
  position:absolute;inset:0;background-size:cover;background-position:center;
  display:flex;flex-direction:column;justify-content:space-between;
}
.phone-screen::after{content:"";position:absolute;inset:0;background:linear-gradient(to bottom,rgba(11,14,18,.22) 0%,rgba(11,14,18,.05) 30%,rgba(11,14,18,.6) 100%);pointer-events:none}
.phone-top{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px 0;font-size:.68rem;color:rgba(255,255,255,.85);
  position:relative;z-index:2;
}
.phone-notch{
  position:absolute;top:10px;left:50%;transform:translateX(-50%);
  width:90px;height:19px;background:#080A0D;border-radius:12px;z-index:3;
}
.phone-time{font-weight:600;letter-spacing:.05em}
.phone-icons{display:flex;gap:5px;font-size:.62rem;align-items:center;opacity:.85}
.phone-body{
  padding:0 18px;position:relative;z-index:2;text-align:center;margin-top:auto;
  margin-bottom:auto;display:flex;flex-direction:column;gap:8px;align-items:center;
}
.phone-body .avatar{
  width:52px;height:52px;border-radius:18px;background:var(--primary);color:#0B0E12;
  font-weight:900;font-size:24px;display:flex;align-items:center;justify-content:center;
  margin-bottom:8px;font-family:Georgia,serif;box-shadow:0 10px 30px rgba(216,255,62,.3);
}
.phone-body h4{font-size:1rem;font-weight:700;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.4)}
.phone-body p{font-size:.65rem;color:rgba(255,255,255,.78);line-height:1.5;max-width:200px;text-shadow:0 1px 6px rgba(0,0,0,.5)}
.phone-login{
  position:relative;z-index:2;padding:0 20px 24px;
}
.phone-login .btn{
  width:100%;padding:14px;font-size:.88rem;background:var(--primary);color:#0B0E12;
  border-radius:999px;font-weight:700;display:flex;justify-content:center;align-items:center;gap:7px;
  transition:transform .3s ease,box-shadow .3s ease;box-shadow:0 12px 32px rgba(0,0,0,.25);
}
.phone-login .btn:hover{transform:scale(.97);box-shadow:0 8px 22px rgba(216,255,62,.15)}
.hero-float-card{
  position:absolute;z-index:3;display:flex;align-items:center;gap:8px;
  padding:9px 15px;border-radius:16px;background:rgba(255,255,255,.1);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.16);font-size:.72rem;color:#fff;font-weight:500;
  box-shadow:var(--shadow);animation:floaty 4s ease-in-out infinite;
}
.hero-float-card b{color:var(--primary);font-size:.82rem}
.hero-float-card.cyan i{background:var(--cyan)}
.hero-float-card i{width:7px;height:7px;background:var(--primary);border-radius:50%;display:inline-block}
.hero-float-card.c1{top:18%;left:-4%;animation-delay:0s}
.hero-float-card.c2{bottom:23%;right:-8%;animation-delay:1.4s}
@keyframes floaty{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-13px)}
}

@media(max-width:1023px){
  .hero{padding:160px 0 70px}
  .hero-inner{grid-template-columns:1fr;gap:38px}
  .hero-copy{max-width:80%}
  .hero-visual{min-height:460px}
  .hero-float-card.c1{left:2%}
  .hero-float-card.c2{right:0}
}
@media(max-width:767px){
  .hero{padding:140px 0 64px}
  .hero-copy{max-width:100%}
  .hero-title{font-size:3.1rem}
  .hero-desc{font-size:.92rem;padding-left:15px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:calc(50% - 6px);padding:13px 12px;font-size:.9rem}
  .hero-visual{min-height:390px;margin-top:24px}
  .phone-mock{width:min(250px,72vw)}
  .hero-float-card.c1{top:5%;left:0}
  .hero-float-card.c2{bottom:18%;right:-2%}
}

/* ===== Section headings ===== */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:46px;flex-wrap:wrap;
}
.section-head-main{display:flex;flex-direction:column;gap:14px}
.sec-index{
  font-family:Georgia,serif;font-size:.84rem;letter-spacing:.18em;color:var(--primary);
  display:inline-flex;align-items:center;gap:9px;font-weight:600;text-transform:uppercase;
}
.sec-index::before{content:"";width:24px;height:1px;background:var(--primary);display:inline-block}
.section-title{font-size:clamp(1.5rem,3vw,2.25rem);font-weight:800;line-height:1.15;letter-spacing:-.01em}
.section-sub{color:var(--muted);font-size:.9rem;line-height:1.8;max-width:520px}
.section-more{
  display:inline-flex;align-items:center;gap:4px;font-size:.86rem;color:var(--muted);
  border-bottom:1px solid transparent;padding-bottom:3px;
}
.section-more:hover{color:var(--primary);border-bottom-color:var(--primary)}
.more-arrow{transition:transform .25s;display:inline-block}
.section-more:hover .more-arrow{transform:translateX(4px)}

/* ===== feature strip after hero ===== */
.promise-strip{
  border-block:1px solid var(--line);
  background:rgba(255,255,255,.015);
  position:relative;z-index:1;
}
.promise-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
}
.promise-item{
  padding:42px 28px;border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:10px;
}
.promise-item:last-child{border-right:none}
.promise-item .promise-icon{
  width:40px;height:40px;border-radius:14px;background:rgba(216,255,62,.07);
  display:flex;align-items:center;justify-content:center;
}
.promise-item svg{width:19px;height:19px;stroke:var(--primary)}
.promise-item b{font-size:1.04rem;font-weight:700;color:var(--text)}
.promise-item p{font-size:.78rem;color:var(--muted);line-height:1.65}
@media(max-width:1023px){
  .promise-grid{grid-template-columns:repeat(2,1fr)}
  .promise-item{border-right:none;border-bottom:1px solid var(--line)}
  .promise-item:nth-child(odd){border-right:1px solid var(--line)}
  .promise-item:nth-last-child(-n+2){border-bottom:none}
}
@media(max-width:640px){
  .promise-grid{grid-template-columns:1fr}
  .promise-item{border-right:none;border-bottom:1px solid var(--line);padding:28px 18px}
  .promise-item:last-child{border-bottom:none}
  .promise-item:nth-child(odd){border-right:none}
}

/* ===== horizontal hot cards ===== */
.hot-section{background:rgba(255,255,255,.008);border-block:1px solid var(--line)}
.hot-scroll-wrap{position:relative}
.hot-scroll{
  display:flex;gap:20px;overflow-x:auto;padding-bottom:12px;
  scrollbar-width:thin;scrollbar-color:rgba(216,255,62,.3) transparent;
  scroll-behavior:smooth;
}
.hot-scroll::-webkit-scrollbar{height:4px}
.hot-scroll::-webkit-scrollbar-thumb{background:rgba(216,255,62,.3);border-radius:50px}
.hot-scroll::-webkit-scrollbar-track{background:rgba(255,255,255,.05)}
.hot-card{
  flex:0 0 calc((100% - 60px)/4);
  min-width:248px;
  border-radius:20px;background:var(--card);border:1px solid var(--line);
  overflow:hidden;position:relative;
  box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  display:flex;flex-direction:column;
}
.hot-card:hover{
  transform:translateY(-6px);box-shadow:var(--shadow-hover);
  border-color:rgba(216,255,62,.3);
}
.hot-media{position:relative;aspect-ratio:16/9.6;overflow:hidden;background:#0E1216}
.hot-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.hot-card:hover .hot-media img{transform:scale(1.05)}
.hot-media::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(11,14,18,.55),transparent 40%)}
.plate-badge{
  position:absolute;top:13px;right:13px;z-index:2;
  background:rgba(255,122,45,.92);color:#160B03;
  font-size:.67rem;font-weight:700;padding:5px 9px;border-radius:999px;
  line-height:1;color:#fff;letter-spacing:.02em;
}
.play-badge{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  z-index:2;width:46px;height:46px;border-radius:50%;background:rgba(0,0,0,.45);
  border:1px solid rgba(255,255,255,.25);display:flex;align-items:center;justify-content:center;
  opacity:0;transition:opacity .3s ease,transform .3s ease;backdrop-filter:blur(6px);
}
.play-badge::after{
  content:"";width:0;height:0;border-left:11px solid #fff;border-top:7px solid transparent;border-bottom:7px solid transparent;margin-left:4px;
}
.hot-card:hover .play-badge{opacity:1;transform:translate(-50%,-50%) scale(1.05)}
.hot-meta{
  padding:16px;display:flex;flex-direction:column;gap:9px;position:relative;
}
.hot-meta h3{font-size:.98rem;font-weight:700;line-height:1.4}
.hot-chip-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:2px}
.tiny-tag{
  display:inline-flex;align-items:center;gap:5px;background:rgba(255,255,255,.06);
  color:var(--muted);padding:4px 9px;border-radius:7px;font-size:.68rem;font-weight:600;
}
.tiny-tag.hot{background:rgba(255,122,45,.13);color:#FFB087}
.tiny-tag.green{background:rgba(216,255,62,.08);color:var(--primary)}
.hot-desc{font-size:.78rem;color:var(--muted);line-height:1.6}
.hot-card-link{
  position:absolute;inset:0;z-index:3;text-indent:-9999px;overflow:hidden;opacity:0;
}
.scroll-fade{position:absolute;top:0;right:0;bottom:12px;width:70px;pointer-events:none;background:linear-gradient(90deg,transparent,var(--bg));border-radius:20px;z-index:2}
@media(max-width:1180px){
  .hot-card{flex-basis:280px}
}
@media(max-width:767px){
  .hot-card{flex-basis:224px;min-width:224px}
  .hot-section .container{padding-inline:10px}
  .hot-scroll{padding-inline:6px 20px}
  .scroll-fade{width:38px}
  .hot-card .hot-media{aspect-ratio:16/9.4}
}

/* ===== rank/种草清单 ===== */
.rank-section .container{max-width:980px}
.rank-list{display:flex;flex-direction:column}
.rank-row{
  display:grid;grid-template-columns:64px 104px 1fr auto;
  gap:30px;align-items:center;
  border-bottom:1px solid var(--line);padding:34px 10px;
  transition:background .35s ease,transform .35s ease;border-radius:16px;
}
.rank-row:first-child{border-top:1px solid var(--line)}
.rank-row:hover{background:var(--panel);transform:translateX(5px)}
.rank-num{
  font-family:Georgia,serif;font-size:2.2rem;color:rgba(216,255,62,.22);font-weight:700;font-style:italic;
  line-height:1;transition:color .35s ease;
}
.rank-row:hover .rank-num{color:var(--primary)}
.rank-thumb{
  width:104px;height:104px;border-radius:18px;overflow:hidden;background:#141A20;
  box-shadow:0 8px 22px rgba(0,0,0,.32);border:1px solid rgba(255,255,255,.06);
}
.rank-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.rank-row:hover .rank-thumb img{transform:scale(1.08)}
.rank-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.rank-body h3{font-size:1.08rem;font-weight:700;letter-spacing:-.01em;transition:color .3s}
.rank-row:hover .rank-body h3{color:var(--primary)}
.rank-body p{font-size:.85rem;color:var(--muted);line-height:1.7}
.rank-tags{display:flex;gap:7px;flex-wrap:wrap;margin-top:3px}
.rank-cta{
  display:inline-flex;align-items:center;gap:7px;font-size:.82rem;color:var(--muted);
  padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.01);
  transition:all .3s ease;white-space:nowrap;
}
.rank-cta .arrow{transition:transform .25s ease}
.rank-cta:hover{
  color:#0B0E12;background:var(--primary);border-color:var(--primary);box-shadow:0 7px 20px rgba(216,255,62,.16);
}
.rank-cta:hover .arrow{transform:translateX(4px)}
@media(max-width:880px){
  .rank-row{grid-template-columns:40px 88px 1fr;gap:18px}
  .rank-cta{grid-column:2/4;justify-self:start;margin-top:2px}
  .rank-thumb{width:88px;height:88px}
  .rank-num{font-size:1.8rem}
}
@media(max-width:640px){
  .rank-row{grid-template-columns:30px 72px 1fr;gap:14px;padding:24px 0}
  .rank-thumb{width:72px;height:72px}
  .rank-body h3{font-size:.94rem}
  .rank-body p{font-size:.8rem}
  .rank-num{display:none}
  .rank-row:hover{transform:none}
}

/* ===== review / proof ===== */
.review-section{background:rgba(255,255,255,.012);border-block:1px solid var(--line);position:relative}
.review-section::before{
  content:"";position:absolute;inset:0;width:100%;height:100%;
  background:radial-gradient(ellipse 45% 70% at 90% 30%,rgba(0,224,198,.04),transparent);
  pointer-events:none;
}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:46px}
.metric-card{
  border-radius:var(--r);padding:22px 22px;background:rgba(18,22,27,.6);
  border:1px solid var(--line);display:flex;align-items:center;gap:18px;
  transition:border-color .3s ease,background .3s ease;
}
.metric-card:hover{border-color:rgba(216,255,62,.24);background:rgba(18,22,27,.9)}
.metric-num{font-size:1.7rem;font-weight:800;color:var(--primary);letter-spacing:-.02em;font-feature-settings:"tnum";line-height:1.1;white-space:nowrap}
.metric-label{font-size:.76rem;color:var(--muted);line-height:1.5;margin-top:5px}
.review-card{
  border-radius:var(--r);background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.07);
  padding:24px 24px 20px;
  transition:background .3s ease,border-color .3s ease;
  display:flex;flex-direction:column;gap:14px;
}
.review-card:hover{background:rgba(255,255,255,.055);border-color:rgba(255,255,255,.14)}
.review-head{display:flex;align-items:center;gap:12px}
.avatar{width:38px;height:38px;border-radius:50%;background:rgba(216,255,62,.18);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:.9rem;font-weight:700;flex-shrink:0}
.avatar.orange{background:rgba(255,122,45,.16);color:#FFB087}
.avatar.cyan{background:rgba(0,224,198,.14);color:var(--cyan)}
.review-user{display:flex;flex-direction:column;gap:2px}
.review-user b{font-size:.82rem;font-weight:600}
.stars{display:flex;gap:2px;font-size:.6rem;color:var(--accent);letter-spacing:.05em}
.review-text{font-size:.82rem;color:var(--muted);line-height:1.85}
.review-text b{color:var(--text);font-weight:600}
.review-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:8px}
.security-mark{display:inline-flex;align-items:center;gap:5px;font-size:.7rem;color:var(--cyan)}
.security-mark::before{content:"✓";display:inline-block;font-weight:800;font-size:.72rem}
.review-more{font-size:.7rem;color:var(--dim)}
@media(max-width:1023px){
  .review-grid{grid-template-columns:1fr 1fr;margin-top:34px}
  .metric-card{grid-column:auto}
  .review-card:last-child{grid-column:1/3}
}
@media(max-width:660px){
  .review-grid{grid-template-columns:1fr}
  .review-card:last-child{grid-column:auto}
  .metric-card{flex-direction:column;align-items:flex-start;gap:8px;padding:20px}
  .metric-num{font-size:1.9rem}
}

/* ===== CTA band ===== */
.cta-band-section{padding-block:70px 130px}
.cta-card{
  position:relative;border-radius:32px;background:var(--card);
  border:1px solid rgba(216,255,62,.24);
  padding:58px 60px;overflow:hidden;
  display:grid;grid-template-columns:1.35fr 1fr;gap:50px;align-items:center;
  box-shadow:0 20px 70px rgba(0,0,0,.4);
  background-image:linear-gradient(115deg,#12161B 0%,#171C23 60%,#141A22 100%);
}
.cta-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(216,255,62,.05) 75%,rgba(216,255,62,.09));
}
.cta-title{font-size:clamp(1.6rem,3vw,2.5rem);line-height:1.2;font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.cta-title em{font-style:normal;color:var(--primary)}
.cta-sub{color:var(--muted);line-height:1.85;font-size:.9rem;max-width:460px;margin-bottom:28px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}
.arrow-big{
  position:absolute;top:-40px;right:30px;font-size:7rem;line-height:1;color:rgba(216,255,62,.06);
  font-family:Georgia,serif;transform:rotate(9deg);pointer-events:none;
}
.cta-right{
  display:flex;flex-direction:column;gap:14px;
  padding:26px;background:rgba(11,14,18,.4);border:1px solid rgba(255,255,255,.07);
  border-radius:22px;backdrop-filter:blur(8px);position:relative;z-index:2;
}
.step-line{display:flex;align-items:flex-start;gap:13px}
.step-num{
  width:30px;height:30px;border-radius:10px;background:rgba(216,255,62,.14);
  color:var(--primary);font-size:.72rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px;
}
.step-title{font-size:.84rem;font-weight:700;margin-bottom:3px;color:#fff}
.step-desc{font-size:.74rem;color:var(--muted);line-height:1.6}
.step-line:not(:last-child)::after{content:"";width:0;flex:0}
@media(max-width:1100px){
  .cta-card{grid-template-columns:1.2fr .8fr;padding:42px 36px}
}
@media(max-width:900px){
  .cta-card{grid-template-columns:1fr;gap:30px;padding:40px 30px}
  .arrow-big{display:none}
}
@media(max-width:640px){
  .cta-band-section{padding-block:50px 80px}
  .cta-card{padding:34px 24px;border-radius:24px}
  .cta-actions .btn{width:100%;justify-content:center}
}

/* ===== News CMS section ===== */
.news-section{background:rgba(255,255,255,.007);border-top:1px solid var(--line)}
.news-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:58px}
.news-main-title{font-size:clamp(1.5rem,3.6vw,2.2rem);letter-spacing:-.02em;margin:6px 0 8px;font-weight:800}
.news-main-title span.main-underline{
  display:block;width:56px;height:3px;border-radius:4px;background:var(--primary);margin-bottom:12px;
}
.news-main-desc{color:var(--muted);font-size:.86rem;line-height:1.85;margin-bottom:22px;max-width:410px}
.news-list{display:flex;flex-direction:column;gap:0}
.news-row{
  display:flex;gap:20px;padding:22px 6px;border-bottom:1px solid rgba(255,255,255,.065);
  transition:background .3s ease,padding-left .3s ease;border-radius:12px;align-items:flex-start;
}
.news-row:hover{background:var(--panel);padding-left:16px}
.news-row-date{
  flex-shrink:0;width:60px;height:60px;border-radius:15px;
  background:rgba(216,255,62,.07);border:1px solid rgba(216,255,62,.14);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-feature-settings:"tnum";
}
.news-row-date b{font-size:1.2rem;color:var(--primary);font-weight:800;line-height:1}
.news-row-date span{font-size:.68rem;color:var(--muted);margin-top:3px}
.news-row-content h3{font-size:.95rem;font-weight:700;line-height:1.5;margin-bottom:4px}
.news-row-content h3:hover{color:var(--primary)}
.cat-line{display:flex;align-items:center;gap:8px;font-size:.7rem;color:var(--dim)}
.cat-line .news-cat{
  color:var(--accent);background:rgba(255,122,45,.07);padding:2px 8px;border-radius:5px;font-weight:600;
}
.news-side{
  display:flex;flex-direction:column;gap:20px;
  padding:32px 26px;border:1px solid var(--line);border-radius:24px;background:var(--panel);
  position:sticky;top:130px;height:fit-content;
}
.news-side h3{font-size:1.05rem;font-weight:800;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.news-side h3 i{width:16px;height:16px;background:var(--primary);border-radius:4px;display:block;flex-shrink:0}
.news-side p{font-size:.78rem;color:var(--muted);line-height:1.8;font-size:.75rem}
.news-contact-link{
  display:inline-flex;align-items:center;justify-content:space-between;gap:15px;
  border:1px solid var(--line);background:var(--card);border-radius:14px;
  padding:15px 22px;font-size:.84rem;font-weight:600;transition:all .3s ease;
  color:var(--text);margin-top:15px;
}
.news-contact-link:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.news-empty{
  padding:44px;text-align:center;border:1px dashed var(--line);border-radius:20px;
  color:var(--muted);font-size:.9rem;background:rgba(255,255,255,.012);
}
.unified-news-card{
  border-radius:var(--r);border:1px solid var(--line);overflow:hidden;background:var(--panel);
  padding:20px;display:flex;flex-direction:column;gap:10px;
  transition:transform .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.unified-news-card:hover{transform:translateY(-5px);border-color:rgba(216,255,62,.22);box-shadow:var(--shadow-hover)}
.unified-news-card .card-top{display:flex;justify-content:space-between;align-items:center}
@media(max-width:900px){.news-layout{grid-template-columns:1fr;gap:42px}.news-side{position:static}}

/* ===== FAQ ===== */
.faq-wrap{max-width:850px;margin:0 auto}
.faq-item{
  border-bottom:1px solid var(--line);padding:26px 10px 4px;
  transition:background .3s ease;
}
.faq-item summary{
  display:flex;justify-content:space-between;align-items:center;cursor:pointer;list-style:none;gap:30px;
  padding-bottom:20px;transition:color .3s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h3{font-size:1rem;font-weight:600;line-height:1.6;letter-spacing:0;transition:color .3s}
.faq-item summary .faq-icon{
  flex-shrink:0;width:30px;height:30px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;transition:all .35s ease;
  position:relative;
}
.faq-item summary .faq-icon::before,
.faq-item summary .faq-icon::after{
  content:"";display:block;position:absolute;background:currentColor;border-radius:2px;
}
.faq-item summary .faq-icon::before{width:10px;height:1.5px}
.faq-item summary .faq-icon::after{width:1.5px;height:10px;transition:opacity .3s}
.faq-item[open] summary .faq-icon{background:var(--primary);color:#0B0E12;transform:rotate(180deg)}
.faq-item[open] summary .faq-icon::after{opacity:0}
.faq-item summary:hover h3{color:var(--primary)}
.faq-answer{padding-right:46px;padding-bottom:22px;color:var(--muted);font-size:.87rem;line-height:1.9}
.faq-cta{
  text-align:center;margin-top:40px;padding:28px;border:1px dashed var(--line);border-radius:18px;
  font-size:.88rem;color:var(--muted);
}
.faq-cta a{color:var(--primary);font-weight:600;border-bottom:1px solid rgba(216,255,62,.4);padding-bottom:1px}
.faq-cta a:hover{border-color:var(--primary)}

/* ===== Small CTA / help strip ===== */
.direct-help{
  background:rgba(216,255,62,.04);border:1px solid rgba(216,255,62,.14);
}
.direct-help-grid{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.direct-help h2{font-size:clamp(1.25rem,2vw,1.6rem);font-weight:800}
.direct-help span{display:block;font-size:.8rem;color:var(--muted);margin-top:6px;font-weight:400}
.direct-help .btn{flex-shrink:0}

/* ===== Footer ===== */
.site-footer{
  background:#070A0D;border-top:1px solid var(--line);
  padding-top:64px;padding-bottom:26px;position:relative;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:44px;padding-bottom:46px;
}
.footer-brand p{font-size:.82rem;color:var(--muted);margin-top:14px;line-height:1.85;max-width:280px}
.footer-title{font-size:.8rem;font-weight:700;color:#fff;letter-spacing:.08em;margin-bottom:20px;position:relative;padding-bottom:9px}
.footer-title::after{content:"";position:absolute;left:0;bottom:0;width:22px;height:2px;background:var(--primary);border-radius:3px}
.footer-link-list{display:flex;flex-direction:column;gap:10px}
.footer-link-list a{color:var(--muted);font-size:.8rem;transition:all .25s;display:inline-flex;align-items:center;gap:6px}
.footer-link-list a:hover{color:var(--primary);transform:translateX(3px)}
.footer-link-list a .dot{width:3px;height:3px;background:var(--accent);border-radius:50%}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);padding-top:24px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:.72rem;color:var(--dim);
}
.footer-bottom .brand-mark{width:22px;height:22px;font-size:12px;border-radius:6px;display:inline-flex;vertical-align:-5px;margin-right:6px}
@media(max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:620px){
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .footer-bottom{flex-direction:column}
}

/* ===== Reveal animation ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}
.reveal-delay-1{transition-delay:.15s}
.reveal-delay-2{transition-delay:.3s}
.reveal-delay-3{transition-delay:.45s}

/* misc */
.section-title .marker{color:var(--primary)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(216,255,62,.08);color:var(--primary);padding:6px 13px;border-radius:999px;font-size:.72rem;letter-spacing:.06em;font-weight:600;border:1px solid rgba(216,255,62,.15);margin-bottom:18px}
.eyebrow .icon-dot{background:var(--primary);width:6px;height:6px;border-radius:50%}

.sub-link{color:var(--muted);font-size:.8rem;font-weight:600;display:inline-flex;align-items:center;gap:5px}
.sub-link:hover{color:var(--primary)}
.sub-link-wrap{display:inline-flex;flex-wrap:wrap;gap:8px 22px;margin-top:22px}
@media(max-width:1023px){ .main-section-border{display:none} }

/* wordpress cms specific guard */
.wp-block{vertical-align:top}

/* roulang page: category1 */
:root {
  --bg: #0B0E12;
  --bg-card: #12161B;
  --bg-float: #171C23;
  --line: rgba(255, 255, 255, 0.08);
  --text: #F2F4F7;
  --muted: #9AA3B2;
  --dim: #5D6470;
  --primary: #D8FF3E;
  --accent: #FF7A2D;
  --cyan: #00E0C6;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
  --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.4);
  --container: 1180px;
  --font-main: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 60px 60px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

img {
  max-width: 100%;
  display: block;
}

button,
input {
  font-family: inherit;
  border: none;
  outline: none;
  background: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 8px;
}

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

.sec-space {
  padding-block: 90px;
}

.sec-space-sm {
  padding-block: 50px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.92rem;
  line-height: 1;
  padding: 13px 24px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--primary);
  color: #0b0e12;
  box-shadow: 0 8px 24px rgba(216, 255, 62, 0.18);
}

.btn-primary:hover {
  box-shadow: 0 16px 34px rgba(216, 255, 62, 0.24);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--line);
  color: var(--text);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(216, 255, 62, 0.35);
  color: var(--primary);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 0.82rem;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
}

/* ===== Header + Floating Nav ===== */
.site-header {
  position: sticky;
  top: 14px;
  z-index: 100;
  width: 100%;
  padding: 0 20px;
}

.nav-wrap {
  max-width: min(100%, var(--container));
  margin: 0 auto;
}

.nav-panel {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 8px 10px 8px 12px;
  background: rgba(11, 14, 18, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 14px 45px rgba(0, 0, 0, 0.35);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-right: 8px;
}

.brand-mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background: var(--primary);
  color: #0b0e12;
  font-weight: 900;
  font-size: 1.3rem;
  clip-path: polygon(0 10%, 18% 0, 100% 12%, 100% 88%, 86% 100%, 0 90%);
  line-height: 1;
}

.brand-name {
  display: flex;
  flex-direction: column;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.02em;
  line-height: 1.15;
}

.brand-name small {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.12em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--muted);
  padding: 10px 13px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.nav-pill svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.nav-pill:hover {
  background: #20272E;
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.08);
}

.nav-pill.active {
  background: rgba(255, 255, 255, 0.09);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 -2px 0 var(--primary);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.nav-cta .btn svg {
  width: 13px;
  height: 13px;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--line);
  cursor: pointer;
  color: var(--text);
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

/* ===== Section heading ===== */
.sec-heading {
  margin-bottom: 44px;
}

.sec-heading .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(216, 255, 62, 0.09);
  border: 1px solid rgba(216, 255, 62, 0.2);
  color: var(--primary);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 5px 13px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.sec-heading h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.18;
  font-weight: 800;
  margin-bottom: 14px;
}

.sec-heading p {
  color: var(--muted);
  max-width: 660px;
  font-size: 0.92rem;
}

.sec-num {
  display: inline-flex;
  align-items: center;
  margin-right: 14px;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--primary);
  border: 1px solid rgba(216, 255, 62, 0.3);
  border-radius: 8px;
  padding: 5px 9px;
  letter-spacing: 0.06em;
}

/* ===== Category Hero ===== */
.cat-hero {
  padding: clamp(58px, 8vw, 112px) 0 70px;
  position: relative;
  background:
    linear-gradient(180deg, rgba(11, 14, 18, 0.62), var(--bg) 92%),
    url("/assets/images/backpic/back-1.png") center / cover no-repeat;
}

.cat-hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -80px auto;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(0, 224, 198, 0.12), transparent 70%);
  pointer-events: none;
}

.cat-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 56px;
  align-items: center;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.76rem;
  color: var(--muted);
  margin-bottom: 26px;
  position: relative;
  z-index: 1;
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb span {
  color: var(--dim);
}

.hero-copy h1 {
  font-size: clamp(2.5rem, 5.4vw, 4.2rem);
  line-height: 1.04;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

.hero-copy h1 .line-block {
  display: block;
}

.hero-copy h1 .light-text {
  color: var(--primary);
}

.hero-copy h1 .soft-text {
  color: var(--muted);
  font-size: 0.58em;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-top: 6px;
}

.hero-desc {
  color: var(--muted);
  max-width: 600px;
  font-size: 1rem;
  line-height: 1.85;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 34px;
}

.hero-trustlist {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  color: var(--muted);
  font-size: 0.78rem;
}

.hero-trustlist li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-trustlist li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(216, 255, 62, 0.6);
}

.hero-media-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: var(--bg-float);
}

.hero-media-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.hero-media-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: var(--radius-lg);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.media-note {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(11, 14, 18, 0.8);
  padding: 12px 15px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(10px);
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.media-note i {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(0, 224, 198, 0.8);
}

/* ===== Safety strip ===== */
.security-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 18px 24px;
  border: 1px solid rgba(0, 224, 198, 0.22);
  background: rgba(0, 224, 198, 0.05);
  border-radius: var(--radius-md);
  color: var(--text);
  margin-bottom: 20px;
}

.security-strip svg {
  width: 22px;
  height: 22px;
  color: var(--cyan);
  flex-shrink: 0;
}

.security-strip strong {
  font-weight: 700;
  color: var(--cyan);
}

.security-strip span {
  font-size: 0.84rem;
  color: var(--muted);
}

/* ===== Genre grid ===== */
.genre-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.genre-card {
  background: var(--bg-float);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.genre-card:hover {
  transform: translateY(-5px);
  border-color: rgba(216, 255, 62, 0.2);
  box-shadow: var(--shadow-hover);
}

.genre-card .topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.genre-card .index {
  font-size: 0.72rem;
  color: var(--dim);
  letter-spacing: 0.08em;
}

.genre-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: rgba(216, 255, 62, 0.1);
  border: 1px solid rgba(216, 255, 62, 0.15);
  border-radius: 13px;
  color: var(--primary);
}

.genre-icon svg {
  width: 20px;
  height: 20px;
}

.genre-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.genre-card p {
  font-size: 0.86rem;
  color: var(--muted);
  line-height: 1.8;
}

.genre-tag {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(255, 122, 45, 0.1);
  border-radius: 6px;
  padding: 4px 9px;
}

.grid-footnote {
  margin-top: 20px;
  font-size: 0.76rem;
  color: var(--dim);
}

/* ===== Feature list ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-float);
  border-color: rgba(255, 255, 255, 0.14);
  transform: translateY(-4px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(216, 255, 62, 0.09);
  color: var(--primary);
  margin-bottom: 18px;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.75;
}

/* ===== Steps ===== */
.steps-wrap {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(26px, 5vw, 54px);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 50px;
  margin-bottom: 30px;
}

.step-item {
  position: relative;
}

.step-item::after {
  content: "";
  position: absolute;
  right: -25px;
  top: 30px;
  width: 22px;
  height: 12px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 12' fill='none' stroke='%23D8FF3E' stroke-width='1.6'%3E%3Cpath d='M3 6h16M15 2l4 4-4 4'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
}

.step-item:last-child::after {
  display: none;
}

.step-num {
  font-size: 2.4rem;
  font-weight: 900;
  color: rgba(216, 255, 62, 0.32);
  line-height: 1;
  margin-bottom: 14px;
  font-variant-numeric: tabular-nums;
}

.step-item h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.step-item p {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.75;
}

.step-note {
  border-left: 3px solid var(--primary);
  background: var(--bg-float);
  border-radius: 0 12px 12px 0;
  padding: 14px 18px;
  color: var(--text);
  font-size: 0.84rem;
}

.step-note small {
  display: block;
  color: var(--muted);
  margin-top: 4px;
  font-size: 0.76rem;
}

/* ===== Use case split ===== */
.split-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: center;
}

.visual-box {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  min-height: 400px;
}

.visual-box img {
  width: 100%;
  height: 100%;
  min-height: 400px;
  object-fit: cover;
}

.visual-point {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(11, 14, 18, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  padding: 13px 16px;
  color: var(--muted);
  font-size: 0.78rem;
  backdrop-filter: blur(10px);
}

.visual-point svg {
  color: var(--primary);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.check-list {
  margin-top: 20px;
}

.check-list li {
  display: flex;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.65;
}

.check-list li:last-child {
  border-bottom: 0;
}

.check-list li svg {
  width: 19px;
  height: 19px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 3px;
}

.check-list li strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 3px;
}

.check-list li span {
  color: var(--muted);
  font-size: 0.84rem;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 880px;
  display: grid;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.faq-item[open] {
  border-color: rgba(216, 255, 62, 0.22);
}

.faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  padding: 19px 22px;
  font-size: 0.95rem;
  font-weight: 700;
  user-select: none;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.3s ease;
  margin-left: auto;
  line-height: 1;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-body {
  padding: 0 22px 20px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.8;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.faq-body p {
  padding-top: 16px;
}

/* ===== CTA ===== */
.cta-area {
  padding-block: 80px;
}

.cta-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid rgba(216, 255, 62, 0.25);
  box-shadow: 0 0 0 1px rgba(216, 255, 62, 0.08), var(--shadow);
  border-radius: var(--radius-lg);
  padding: clamp(28px, 6vw, 64px);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 30px;
  align-items: center;
}

.cta-card::before {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  right: -90px;
  top: -90px;
  background: radial-gradient(circle, rgba(216, 255, 62, 0.12), transparent 65%);
  pointer-events: none;
}

.cta-copy h2 {
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 14px;
}

.cta-copy p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.8;
  max-width: 600px;
}

.cta-acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
  align-items: center;
  position: relative;
  z-index: 2;
}

/* ===== Footer ===== */
.site-footer {
  background: #080A0D;
  border-top: 1px solid var(--line);
  padding: 60px 0 30px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 36px;
}

.footer-brand p {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.8;
  margin-top: 14px;
  max-width: 360px;
}

.footer-title {
  font-size: 0.88rem;
  color: var(--text);
  margin-bottom: 16px;
  font-weight: 700;
}

.footer-link-list {
  display: grid;
  gap: 10px;
}

.footer-link-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-link-list a:hover {
  color: var(--primary);
}

.footer-link-list .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #5D6470;
  transition: background 0.3s ease;
}

.footer-link-list a:hover .dot {
  background: var(--primary);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 24px;
  color: var(--dim);
  font-size: 0.77rem;
}

/* ===== Responsive ===== */
@media (max-width: 1100px) {
  .brand-name small {
    display: none;
  }

  .nav-pill {
    font-size: 0.8rem;
    padding: 9px 10px;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-card {
    grid-template-columns: 1fr;
  }

  .cta-acts {
    justify-content: flex-start;
  }
}

@media (max-width: 980px) {
  .main-nav {
    display: none;
    flex: 0 0 100%;
    order: 3;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    background: rgba(11, 14, 18, 0.55);
    border-top: 1px solid var(--line);
    padding-top: 10px;
    margin-top: 6px;
  }

  .main-nav.open {
    display: flex;
  }

  .nav-pill {
    border-radius: 12px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .cat-hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-media-card {
    max-width: 560px;
  }

  .steps-grid {
    gap: 26px;
  }

  .step-item::after {
    display: none;
  }

  .split-layout {
    grid-template-columns: 1fr;
  }

  .visual-box {
    min-height: 300px;
  }

  .visual-box img {
    min-height: 300px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .sec-space {
    padding-block: 56px;
  }

  .genre-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .btn-lg {
    padding: 14px 24px;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 32px, var(--container));
  }

  .nav-panel {
    gap: 8px;
    padding-left: 8px;
  }

  .brand-mark {
    width: 29px;
    height: 29px;
    font-size: 1.1rem;
  }

  .brand-name {
    font-size: 0.85rem;
  }

  .brand-name small {
    display: none;
  }

  .nav-cta .btn {
    padding: 8px 12px;
    font-size: 0.76rem;
  }

  .genre-grid {
    grid-template-columns: 1fr;
  }

  .cat-hero {
    padding-top: 46px;
  }

  .hero-copy h1 {
    font-size: 2.25rem;
  }

  .feature-card {
    padding: 22px 18px;
  }

  .cta-card {
    padding: 24px 20px;
  }

  .faq-item summary {
    font-size: 0.88rem;
  }

  .faq-body {
    font-size: 0.82rem;
  }

  .security-strip {
    padding: 14px 16px;
  }
}

/* roulang page: article */
:root {
  --bg: #0B0E12;
  --bg-elev: #12161B;
  --bg-float: #171C23;
  --primary: #D8FF3E;
  --primary-hover: #E3FF66;
  --secondary: #FF7A2D;
  --cyan: #00E0C6;
  --text: #F2F4F7;
  --text-sub: #9AA3B2;
  --text-dim: #5D6470;
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.14);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --shadow-card: 0 10px 30px rgba(0,0,0,0.22);
  --shadow-hover: 0 20px 50px rgba(0,0,0,0.4), 0 0 0 1px rgba(216,255,62,0.16);
  --font: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", system-ui, sans-serif;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.01em;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
  border: 0;
}
button, input {
  font: inherit;
  color: inherit;
}
ul, ol {
  list-style: none;
}
svg {
  flex: 0 0 auto;
}
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.container-article {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.92rem;
  line-height: 1;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.btn:active {
  transform: scale(0.97);
}
.btn-primary {
  background: var(--primary);
  color: var(--bg);
  box-shadow: 0 8px 24px rgba(216,255,62,0.16);
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(216,255,62,0.22);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}
.btn-sm {
  padding: 10px 16px;
  font-size: 0.86rem;
}
.btn svg {
  transition: transform 0.3s ease;
}
.btn:hover svg {
  transform: translateX(3px);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  padding: 16px 0 4px;
}
.nav-wrap {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}
.nav-panel {
  position: relative;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 12px 10px 18px;
  background: rgba(11,14,18,0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.32);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: var(--bg-float);
  border: 1px solid rgba(216,255,62,0.55);
  color: var(--primary);
  font-size: 1.2rem;
  font-weight: 900;
  border-radius: 14px 18px 6px 18px;
  transition: transform 0.3s ease;
}
.brand:hover .brand-mark {
  transform: rotate(-6deg);
}
.brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  font-weight: 800;
  font-size: 1.12rem;
  color: var(--text);
  letter-spacing: -0.01em;
}
.brand-name small {
  font-size: 0.66rem;
  font-weight: 500;
  color: var(--text-sub);
  letter-spacing: 0.04em;
  margin-top: 3px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  justify-content: center;
  min-width: 0;
}
.nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 13px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--text-sub);
  font-size: 0.87rem;
  font-weight: 500;
  background: transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.nav-pill svg {
  width: 16px;
  height: 16px;
}
.nav-pill:hover {
  background: #20272E;
  color: var(--text);
}
.nav-pill.active {
  color: var(--primary);
  background: rgba(216,255,62,0.08);
  border-color: rgba(216,255,62,0.28);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-left: auto;
}
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: var(--bg-float);
  border: 1px solid var(--line);
  color: var(--text);
  cursor: pointer;
}
.nav-toggle svg {
  width: 18px;
  height: 18px;
}
.article-page-main {
  position: relative;
  padding: 64px 0 60px;
  min-height: 60vh;
}
.breadcrumb-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
  font-size: 0.82rem;
  color: var(--text-sub);
}
.breadcrumb-row a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.25s ease;
}
.breadcrumb-row a:hover {
  color: var(--primary);
}
.article-panel {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.015), rgba(255,255,255,0) 12%), var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 48px 56px 44px;
  overflow: hidden;
}
.article-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
  background: var(--bg-float);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.8rem;
  color: var(--text-sub);
  margin-bottom: 30px;
}
.bar-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--secondary);
  font-weight: 600;
}
.bar-chip svg,
.bar-read svg {
  width: 14px;
  height: 14px;
}
.bar-read {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  color: var(--text-sub);
  font-size: 0.84rem;
  margin: 4px 0 14px;
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-source {
  color: var(--cyan);
}
.article-title {
  font-size: clamp(2rem, 4.2vw, 3rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text);
  word-break: break-word;
  margin-bottom: 20px;
}
.article-summary {
  font-size: 1.02rem;
  line-height: 1.85;
  color: #C7D0DD;
  background: rgba(216,255,62,0.035);
  border-left: 2px solid var(--primary);
  border-radius: 0 12px 12px 0;
  padding: 14px 20px;
  margin: 18px 0 0;
}
.article-divider {
  height: 1px;
  background: var(--line);
  margin: 34px 0 30px;
}
.article-body {
  font-size: 0.98rem;
  line-height: 1.85;
  color: #E7EBF2;
}
.article-body p {
  margin-bottom: 1.5em;
}
.article-body strong {
  color: var(--text);
}
.article-body h2,
.article-body h3,
.article-body h4 {
  color: var(--text);
  position: relative;
}
.article-body h2 {
  font-size: 1.45rem;
  line-height: 1.4;
  font-weight: 800;
  margin: 2.3em 0 0.8em;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.article-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 2em 0 0.6em;
}
.article-body h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 1.7em 0 0.5em;
}
.article-body ul,
.article-body ol {
  margin: 0 0 1.6em;
  padding-left: 1.5em;
}
.article-body ul li {
  list-style: disc;
}
.article-body ol li {
  list-style: decimal;
}
.article-body li {
  margin-bottom: 0.6em;
}
.article-body a {
  color: var(--primary);
  border-bottom: 1px solid rgba(216,255,62,0.3);
  transition: border-color 0.25s ease;
}
.article-body a:hover {
  border-bottom-color: var(--primary);
}
.article-body img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--line);
  margin: 1.6em 0;
}
.article-body blockquote {
  background: var(--bg-float);
  border-left: 3px solid var(--primary);
  border-radius: 0 12px 12px 0;
  padding: 14px 20px;
  margin: 1.6em 0;
  color: #C7D0DD;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8em 0;
  font-size: 0.9rem;
}
.article-body th,
.article-body td {
  border: 1px solid var(--line-strong);
  padding: 10px 14px;
  text-align: left;
}
.article-body th {
  background: var(--bg-float);
  color: var(--text);
}
.article-body code {
  background: var(--bg-float);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 2px 7px;
  font-size: 0.9em;
}
.article-empty {
  text-align: center;
  padding: 70px 20px 80px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.015);
}
.article-empty .empty-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  border-radius: 18px;
  background: rgba(216,255,62,0.08);
  border: 1px solid rgba(216,255,62,0.22);
  display: grid;
  place-items: center;
  color: var(--primary);
}
.article-empty h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}
.article-empty p {
  color: var(--text-sub);
  margin-bottom: 24px;
}
.article-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 40px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.article-bottom-note {
  font-size: 0.8rem;
  color: var(--text-sub);
}
.article-bottom-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.faq-section {
  padding-top: 76px;
}
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}
.section-kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--primary);
}
.faq-section .section-title {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 36px;
  letter-spacing: -0.02em;
}
.faq-list {
  display: grid;
  gap: 12px;
}
.faq-item {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.25s ease;
}
.faq-item[open] {
  border-color: rgba(216,255,62,0.25);
  background: var(--bg-float);
}
.faq-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  padding: 18px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  transition: background 0.25s ease;
}
.faq-summary::-webkit-details-marker {
  display: none;
}
.faq-summary:hover {
  background: rgba(255,255,255,0.025);
}
.faq-summary::after {
  content: "+";
  font-size: 1.4rem;
  line-height: 1;
  color: var(--primary);
  font-weight: 300;
  transition: transform 0.25s ease;
}
.faq-item[open] .faq-summary::after {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 22px 20px;
  color: var(--text-sub);
  font-size: 0.9rem;
  line-height: 1.85;
}
.login-cta {
  padding-top: 70px;
}
.login-guide-card {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 34px;
  background: var(--bg-elev);
  border: 1px solid rgba(216,255,62,0.28);
  border-radius: var(--radius-lg);
  padding: 38px 40px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.login-guide-card h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.login-guide-card p {
  color: var(--text-sub);
  font-size: 0.95rem;
  margin-bottom: 24px;
}
.login-visual {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg);
}
.login-visual img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  transition: transform 0.45s ease;
}
.login-visual:hover img {
  transform: scale(1.02);
}
.cta-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 16px;
}
.step-item {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px 20px;
  min-height: 120px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.step-item:hover {
  border-color: rgba(216,255,62,0.28);
  transform: translateY(-3px);
}
.step-num {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
  font-feature-settings: "tnum";
}
.step-title {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 5px;
}
.step-desc {
  font-size: 0.78rem;
  color: var(--text-sub);
  line-height: 1.7;
}
.site-footer {
  background: #080B0F;
  border-top: 1px solid var(--line);
  margin-top: 90px;
  padding: 72px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 46px;
}
.footer-brand {
  max-width: 360px;
}
.footer-brand p {
  color: var(--text-sub);
  font-size: 0.86rem;
  line-height: 1.8;
  margin-top: 14px;
}
.footer-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.footer-link-list {
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.footer-link-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-sub);
  font-size: 0.85rem;
  transition: color 0.25s ease, transform 0.25s ease;
}
.footer-link-list a:hover {
  color: var(--primary);
  transform: translateX(2px);
}
.footer-link-list .dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: background 0.25s ease;
}
.footer-link-list a:hover .dot {
  background: var(--primary);
}
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--text-dim);
  font-size: 0.78rem;
}
@media (max-width: 1080px) {
  .main-nav {
    gap: 0;
  }
  .nav-pill {
    padding-left: 10px;
    padding-right: 10px;
  }
}
@media (max-width: 920px) {
  .nav-panel {
    flex-wrap: wrap;
    gap: 12px;
    border-radius: 20px;
  }
  .nav-cta {
    margin-left: auto;
  }
  .main-nav {
    order: 4;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    display: none;
    padding-top: 8px;
    border-top: 1px solid var(--line);
    margin-top: 2px;
  }
  body.nav-open .main-nav {
    display: flex;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-pill {
    width: 100%;
    padding: 13px 14px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .login-guide-card {
    grid-template-columns: 1fr;
  }
  .cta-steps {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 760px) {
  .article-panel {
    padding: 34px 24px 32px;
    border-radius: 18px;
  }
  .article-page-main {
    padding: 40px 0 36px;
  }
  .brand-name {
    font-size: 1.02rem;
  }
  .container,
  .container-article {
    padding-left: 16px;
    padding-right: 16px;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .faq-summary {
    padding: 16px;
    font-size: 0.88rem;
  }
  .faq-answer {
    padding-left: 16px;
    padding-right: 16px;
  }
}
@media (max-width: 540px) {
  .header .brand-mark {
    width: 38px;
    height: 38px;
  }
  .brand-name {
    font-size: 0.95rem;
  }
  .brand-name small {
    font-size: 0.62rem;
  }
  .nav-cta .btn-primary span.text-label {
    display: none;
  }
  .article-title {
    font-size: 1.85rem;
  }
  .article-body {
    font-size: 0.94rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-steps {
    grid-template-columns: 1fr;
  }
  .login-guide-card {
    padding: 26px 20px;
  }
  .article-bar {
    padding: 8px 12px;
    font-size: 0.75rem;
  }
  .article-meta {
    gap: 8px 14px;
    font-size: 0.78rem;
  }
}

/* roulang page: category2 */
:root{
  --bg:#0B0E12;
  --card:#12161B;
  --float:#171C23;
  --brand:#D8FF3E;
  --aux:#FF7A2D;
  --cyan:#00E0C6;
  --text:#F2F4F7;
  --text-mid:#9AA3B2;
  --text-weak:#5D6470;
  --stroke:rgba(255,255,255,.08);
  --stroke-strong:rgba(255,255,255,.14);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 10px 30px rgba(0,0,0,.22);
  --shadow-hover:0 20px 50px rgba(0,0,0,.4);
  --font:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans SC",system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:15px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
.container{
  width:min(1180px, calc(100% - 48px));
  margin:0 auto;
}
.section{
  padding:100px 0;
  position:relative;
}
.section-head{
  max-width:760px;
  margin-bottom:56px;
}
.section-index{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--brand);
  font-size:.88rem;
  font-weight:700;
  letter-spacing:.04em;
  margin-bottom:16px;
}
.section-index::before{
  content:"";
  display:inline-block;
  width:32px;height:1px;
  background:var(--brand);
  opacity:.7;
}
.section-title{
  font-size:clamp(1.6rem,3vw,2.5rem);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.01em;
}
.section-desc{
  color:var(--text-mid);
  font-size:1rem;
  margin-top:18px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:999px;
  font-weight:700;
  font-size:.95rem;
  line-height:1;
  padding:15px 28px;
  border:1px solid transparent;
  transition:all .3s ease;
  will-change:transform;
}
.btn:active{transform:scale(.97)}
.btn-primary{
  background:var(--brand);
  color:#0B0E12;
}
.btn-primary:hover{
  background:#E5FF70;
  transform:translateY(2px);
  box-shadow:0 10px 24px rgba(216,255,62,.16);
}
.btn-ghost{
  border-color:var(--stroke-strong);
  color:var(--text);
  background:rgba(255,255,255,.02);
}
.btn-ghost:hover{
  border-color:var(--cyan);
  color:var(--cyan);
  transform:translateY(2px);
}
.btn-sm{padding:10px 18px;font-size:.88rem}
.btn-center{display:flex;justify-content:center}
.text-mid{color:var(--text-mid)}

/* header nav */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  padding:16px 16px 0;
}
.nav-panel{
  position:relative;
  max-width:1180px;
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:18px;
  background:rgba(11,14,18,.7);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border:1px solid var(--stroke);
  border-radius:22px;
  padding:10px 14px 10px 18px;
  box-shadow:0 18px 44px rgba(0,0,0,.28);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand);
  color:#0B0E12;
  font-weight:900;
  font-size:1.25rem;
  border-radius:12px;
  transform:skewX(-6deg);
  font-feature-settings:"tnum";
}
.brand-name{
  font-weight:800;
  font-size:1.08rem;
  line-height:1.2;
  display:flex;
  flex-direction:column;
}
.brand-name small{
  font-size:.68rem;
  font-weight:600;
  color:var(--text-mid);
  letter-spacing:.02em;
}
.main-nav{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:3px;
  flex:1;
}
.nav-pill{
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:var(--text-mid);
  font-size:.9rem;
  font-weight:600;
  padding:10px 16px;
  border-radius:999px;
  transition:background-color .25s ease,color .25s ease;
  white-space:nowrap;
}
.nav-pill svg{
  width:16px;height:16px;
  flex-shrink:0;
  stroke-width:1.9;
}
.nav-pill:hover{
  background:rgba(255,255,255,.06);
  color:#fff;
}
.nav-pill.active{
  background:var(--brand);
  color:#0B0E12;
}
.nav-cta{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.nav-toggle{
  width:42px;height:42px;
  display:none;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  border:1px solid var(--stroke);
  color:var(--text-mid);
  transition:all .25s ease;
}
.nav-toggle:hover{
  color:var(--brand);
  border-color:var(--brand);
}
.nav-toggle svg{width:22px;height:22px}

/* hero */
.hero{
  position:relative;
  padding:88px 0 78px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 65% 55% at 45% 35%,#000 40%,transparent 100%);
  mask-image:radial-gradient(ellipse 65% 55% at 45% 35%,#000 40%,transparent 100%);
}
.hero::after{
  content:"";
  position:absolute;
  width:460px;height:460px;
  top:-160px;right:-100px;
  background:radial-gradient(circle,rgba(216,255,62,.08),transparent 65%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:1.04fr .96fr;
  gap:72px;
  align-items:center;
  z-index:2;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--brand);
  background:rgba(216,255,62,.08);
  border:1px solid rgba(216,255,62,.2);
  border-radius:999px;
  padding:8px 16px;
  font-size:.82rem;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:24px;
}
.hero-tag::before{
  content:"";
  width:7px;height:7px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 4px rgba(0,224,198,.14);
}
.hero-title{
  font-size:clamp(2.8rem,6.4vw,5.2rem);
  font-weight:800;
  line-height:.98;
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero-title .line-mark{
  color:var(--brand);
  position:relative;
  display:inline-block;
}
.hero-title .line-mark::after{
  content:"";
  position:absolute;
  left:2px;right:4px;bottom:6px;
  height:10px;
  background:rgba(216,255,62,.16);
  z-index:-1;
  border-radius:6px;
}
.hero-lead{
  color:var(--text-mid);
  font-size:1.05rem;
  max-width:540px;
  line-height:1.9;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin:32px 0 28px;
}
.hero-tips{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.hero-tip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--text-mid);
  background:var(--card);
  border:1px solid var(--stroke);
  border-radius:999px;
  padding:8px 13px;
  font-size:.76rem;
  font-weight:600;
}
.hero-tip svg{width:14px;height:14px;stroke:var(--cyan);fill:none;stroke-width:2}
/* hero visual */
.hero-visual{
  position:relative;
}
.visual-frame{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--stroke-strong);
  background:var(--card);
  box-shadow:var(--shadow-card);
}
.visual-frame img{
  width:100%;
  height:380px;
  object-fit:cover;
}
.frame-top{
  position:absolute;
  top:0;left:0;right:0;
  height:34px;
  display:flex;
  align-items:center;
  gap:6px;
  padding:0 14px;
  background:rgba(11,14,18,.55);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--stroke);
  z-index:2;
}
.frame-top span{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--text-weak);
}
.frame-top span:first-child{background:var(--aux)}
.frame-top span:last-child{background:var(--cyan)}
.visual-card{
  position:absolute;
  left:18px;bottom:18px;
  right:18px;
  background:rgba(18,22,27,.78);
  backdrop-filter:blur(10px);
  border:1px solid var(--stroke-strong);
  border-radius:var(--radius-md);
  padding:14px 18px;
  display:flex;
  align-items:center;
  gap:12px;
}
.visual-check{
  width:38px;height:38px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,224,198,.14);
  color:var(--cyan);
  flex-shrink:0;
}
.visual-check svg{width:18px;height:18px;stroke-width:2.4;fill:none}
.visual-card p{
  font-size:.88rem;
  line-height:1.5;
}
.visual-card b{
  color:#fff;
  font-weight:700;
  font-size:.95rem;
}
.visual-card small{
  display:block;
  color:var(--text-mid);
  font-size:.76rem;
}
/* notice strip */
.notice-strip{
  display:flex;
  align-items:center;
  gap:10px;
  background:var(--card);
  border:1px solid rgba(0,224,198,.22);
  border-radius:var(--radius-md);
  padding:14px 20px;
  color:var(--text-mid);
  font-size:.9rem;
}
.notice-strip svg{
  width:18px;height:18px;
  stroke:var(--cyan);
  fill:none;
  stroke-width:2.2;
  flex-shrink:0;
}
/* coverage list */
.coverage-block{
  border-top:1px solid var(--stroke);
}
.coverage-list{
  display:flex;
  flex-direction:column;
}
.coverage-item{
  display:grid;
  grid-template-columns:84px 1fr auto;
  gap:28px;
  align-items:center;
  padding:30px 12px;
  border-bottom:1px solid var(--stroke);
  transition:background-color .3s ease,transform .3s ease;
  border-radius:14px;
}
.coverage-item:last-child{border-bottom:none}
.coverage-item:hover{
  background:var(--card);
  transform:translateX(6px);
}
.coverage-num{
  font-size:2.4rem;
  font-weight:800;
  color:transparent;
  -webkit-text-stroke:1px rgba(216,255,62,.6);
  font-feature-settings:"tnum";
  line-height:1;
}
.coverage-title{
  font-size:1.16rem;
  font-weight:700;
  margin-bottom:6px;
}
.coverage-desc{
  color:var(--text-mid);
  font-size:.92rem;
  max-width:640px;
}
.coverage-go{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-size:.82rem;
  font-weight:700;
  white-space:nowrap;
}
.coverage-go svg{
  width:14px;height:14px;
  fill:none;
  stroke:currentColor;
  stroke-width:2.4;
  transition:transform .25s ease;
}
.coverage-item:hover .coverage-go svg{
  transform:translateX(3px);
}
/* steps */
.steps-block{
  background:linear-gradient(180deg,transparent, rgba(18,22,27,.55));
}
.step-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.step-card{
  background:var(--float);
  border-radius:var(--radius-lg);
  padding:28px 24px 26px;
  border:1px solid var(--stroke);
  min-height:224px;
  position:relative;
  overflow:hidden;
  transition:border-color .3s ease,box-shadow .3s ease,transform .3s ease;
}
.step-card::after{
  content:"";
  position:absolute;
  left:24px;top:87px;
  border-left:1px dashed rgba(255,255,255,.14);
  height:55px;
}
.step-card:last-child::after{display:none}
.step-card:hover{
  border-color:rgba(216,255,62,.28);
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
.step-index{
  font-size:2.8rem;
  font-weight:800;
  line-height:1;
  background:linear-gradient(160deg,var(--brand) 20%,var(--aux) 90%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  font-feature-settings:"tnum";
}
.step-title{
  font-size:1.05rem;
  font-weight:700;
  margin:18px 0 10px;
}
.step-text{
  color:var(--text-mid);
  font-size:.86rem;
  line-height:1.7;
}
/* devices */
.devices-block{
  border-top:1px solid var(--stroke);
}
.device-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
}
.device-card{
  background:var(--card);
  border:1px solid var(--stroke);
  border-radius:var(--radius-lg);
  padding:34px 34px 26px;
  transition:border-color .3s ease,box-shadow .3s ease,transform .3s ease;
}
.device-card:hover{
  border-color:rgba(0,224,198,.3);
  box-shadow:var(--shadow-card);
  transform:translateY(-4px);
}
.device-head{
  display:flex;
  align-items:center;
  gap:16px;
  margin-bottom:22px;
}
.device-icon{
  width:58px;height:58px;
  border-radius:16px;
  background:rgba(255,255,255,.04);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--brand);
}
.device-icon svg{width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:1.7}
.device-title{
  font-size:1.25rem;
  font-weight:800;
}
.device-sub{
  color:var(--text-mid);
  font-size:.82rem;
}
.device-list{
  list-style:none;
  border-top:1px solid var(--stroke);
}
.device-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:13px 0;
  color:var(--text-mid);
  font-size:.93rem;
  border-bottom:1px solid var(--stroke);
}
.device-list li:last-child{border-bottom:none}
.device-list li::before{
  content:"";
  width:6px;height:6px;
  border-radius:2px;
  background:var(--brand);
  flex-shrink:0;
  margin-top:11px;
}
/* faq */
.faq-block{
  border-top:1px solid var(--stroke);
}
.faq-layout{
  display:grid;
  grid-template-columns:1fr 1.1fr;
  gap:56px;
  align-items:start;
}
.faq-intro{
  background:var(--card);
  border:1px solid var(--stroke);
  border-radius:var(--radius-lg);
  padding:28px 30px;
}
.faq-intro h3{
  font-size:1.2rem;
  font-weight:800;
  margin-bottom:12px;
}
.faq-intro p{
  color:var(--text-mid);
  font-size:.92rem;
  margin-bottom:16px;
}
.faq-list{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.faq-item{
  background:var(--card);
  border:1px solid var(--stroke);
  border-radius:16px;
  overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item:hover{
  border-color:rgba(216,255,62,.3);
}
.faq-item summary{
  list-style:none;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  padding:18px 22px;
  color:var(--text);
  font-weight:700;
  font-size:.95rem;
  cursor:pointer;
  transition:background .25s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";
  width:9px;height:9px;
  border-right:2px solid var(--text-mid);
  border-bottom:2px solid var(--text-mid);
  transform:rotate(45deg);
  transition:transform .3s ease, border-color .3s ease;
  flex-shrink:0;
  margin-top:-4px;
}
.faq-item:hover summary::after{border-color:var(--brand)}
.faq-item[open] summary::after{
  transform:rotate(225deg);
  margin-top:4px;
  border-color:var(--brand);
}
.faq-item[open] summary{
  color:var(--brand);
}
.faq-answer{
  color:var(--text-mid);
  font-size:.9rem;
  line-height:1.8;
  padding:0 24px 20px;
}
/* cta */
.cta-section{
  padding-top:20px;
}
.cta-panel{
  position:relative;
  background:var(--float);
  border:1px solid var(--stroke);
  border-radius:30px;
  overflow:hidden;
  padding:76px 50px;
  text-align:center;
}
.cta-bg{
  position:absolute;
  inset:0;
  opacity:.24;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  z-index:0;
}
.cta-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(11,14,18,.86),rgba(18,22,27,.92));
}
.cta-inner{
  position:relative;
  z-index:2;
  max-width:720px;
  margin:0 auto;
}
.cta-panel::before{
  content:"";
  position:absolute;
  top:26px;right:30px;
  width:90px;height:90px;
  border-radius:24px;
  background:rgba(216,255,62,.05);
  border:1px solid rgba(216,255,62,.2);
  transform:rotate(10deg);
  z-index:1;
}
.cta-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:54px;height:54px;
  border-radius:18px;
  background:var(--brand);
  color:#0B0E12;
  font-size:1.5rem;
  font-weight:900;
  margin-bottom:22px;
}
.cta-title{
  font-size:clamp(1.7rem,3vw,2.5rem);
  font-weight:800;
  line-height:1.2;
  margin-bottom:16px;
}
.cta-title .txt-line{color:var(--brand)}
.cta-text{
  color:var(--text-mid);
  max-width:560px;
  margin:0 auto 26px;
  font-size:.95rem;
}
.cta-buttons{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:14px;
}
/* footer */
.site-footer{
  border-top:1px solid var(--stroke);
  background:rgba(255,255,255,.012);
  padding:54px 0 28px;
  margin-top:40px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr;
  gap:46px;
  padding-bottom:44px;
  border-bottom:1px solid var(--stroke);
}
.footer-brand p{
  color:var(--text-mid);
  font-size:.88rem;
  max-width:360px;
  margin-top:16px;
}
.footer-title{
  font-size:.98rem;
  font-weight:700;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-link-list{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-link-list a{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text-mid);
  font-size:.88rem;
  transition:color .25s ease;
}
.footer-link-list a:hover{color:var(--brand)}
.footer-link-list .dot{
  width:5px;height:5px;
  border-radius:50%;
  background:var(--text-weak);
  transition:background .25s ease;
}
.footer-link-list a:hover .dot{
  background:var(--brand);
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:14px;
  padding-top:24px;
  color:var(--text-weak);
  font-size:.78rem;
  flex-wrap:wrap;
}
@media (max-width:1180px){
  .nav-panel{gap:8px}
  .nav-pill{font-size:0;padding:10px 12px}
  .nav-pill svg{width:18px;height:18px}
  .nav-toggle svg{width:22px;height:22px}
}
@media (max-width:1024px){
  .section{padding:84px 0}
  .hero-inner{gap:40px;grid-template-columns:1.1fr .9fr}
  .visual-frame img{height:330px}
  .step-grid{grid-template-columns:1fr 1fr;gap:16px}
  .step-card::after{display:none}
  .step-card{min-height:auto}
  .faq-layout{grid-template-columns:1fr;gap:36px}
  .footer-grid{gap:28px}
}
@media (max-width:920px){
  .nav-panel{flex-wrap:wrap}
  .main-nav{
    display:none;
    position:absolute;
    top:calc(100% + 10px);
    left:0;right:0;
    background:rgba(11,14,18,.97);
    border:1px solid var(--stroke);
    border-radius:18px;
    padding:12px;
    flex-direction:column;
    gap:4px;
    align-items:stretch;
    backdrop-filter:blur(20px);
    box-shadow:0 22px 60px rgba(0,0,0,.42);
  }
  .main-nav.open{display:flex}
  .nav-pill{
    font-size:.9rem;
    justify-content:flex-start;
    padding:12px 16px;
  }
  .nav-pill svg{width:17px;height:17px}
  .nav-toggle{display:inline-flex}
  .nav-cta{margin-left:auto}
  .hero-inner{grid-template-columns:1fr;gap:56px}
  .hero{padding-top:64px}
  .hero-title{max-width:none}
  .hero-visual{order:2}
}
@media (max-width:768px){
  .section{padding:70px 0}
  .container{width:min(100% - 32px,1180px)}
  .coverage-item{grid-template-columns:56px 1fr;gap:12px 16px}
  .coverage-go{grid-column:2;justify-content:flex-start}
  .coverage-num{font-size:2rem}
  .step-grid{grid-template-columns:1fr 1fr}
  .device-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-panel{padding:54px 26px}
}
@media (max-width:520px){
  .section{padding:60px 0}
  body{font-size:14px}
  .brand-name{font-size:.96rem}
  .brand-name small{display:none}
  .nav-cta .btn-sm{padding:9px 14px;font-size:.8rem}
  .nav-toggle{width:40px;height:40px}
  .hero-actions .btn{width:100%}
  .coverage-title{font-size:1rem}
  .coverage-item{grid-template-columns:48px 1fr;padding-left:0;padding-right:0}
  .coverage-num{font-size:1.7rem}
  .step-grid{grid-template-columns:1fr}
  .device-card{padding:24px 22px}
  .device-head{gap:12px}
  .device-icon{width:48px;height:48px;border-radius:14px}
  .cta-buttons .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:left}
  .faq-item summary{font-size:.9rem;padding:16px 18px}
  .faq-answer{padding-left:18px;padding-right:18px}
  .notice-strip{flex-wrap:wrap}
}

/* roulang page: category3 */
:root {
  --bg: #0B0E12;
  --card: #12161B;
  --card-raise: #171C23;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #F2F4F7;
  --muted: #9AA3B2;
  --dim: #5D6470;
  --primary: #D8FF3E;
  --accent: #FF7A2D;
  --cyan: #00E0C6;
  --radius-lg: 24px;
  --radius: 16px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --container: 1180px;
  --gap: 24px;
  --shadow: 0 10px 30px rgba(0,0,0,0.22);
  --shadow-hover: 0 20px 50px rgba(0,0,0,0.4), 0 0 0 1px rgba(216,255,62,0.18);
  --font: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  min-height: 100vh;
  font-feature-settings: "tnum";
}

body:lang(zh-CN) {
  font-feature-settings: normal;
}

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 800;
  color: var(--text);
}

h1 {
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  letter-spacing: -0.02em;
  line-height: 1.04;
  margin-bottom: 24px;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}

p {
  color: var(--muted);
  line-height: 1.8;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

img {
  display: block;
  max-width: 100%;
  object-fit: cover;
}

button, input, textarea, select {
  font-family: var(--font);
  border: none;
  background: none;
  color: inherit;
  font-size: 1rem;
}

button {
  cursor: pointer;
}

svg {
  flex-shrink: 0;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 96px 0;
}

.sec-head {
  max-width: 820px;
  margin-bottom: 48px;
}

.sec-index {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.sec-index::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.sec-desc {
  max-width: 720px;
  margin-top: 8px;
}

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 30px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  white-space: nowrap;
  background: transparent;
  border: 1px solid transparent;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.btn:focus-visible {
  outline: 3px solid rgba(216, 255, 62, 0.45);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--primary);
  color: #0B0E12;
  border-color: var(--primary);
  box-shadow: 0 4px 20px rgba(216, 255, 62, 0.12);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(216, 255, 62, 0.28);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line-strong);
  color: var(--text);
}

.btn-outline:hover {
  transform: translateY(-3px);
  border-color: rgba(216, 255, 62, 0.6);
  color: var(--primary);
}

.btn-outline:active {
  transform: scale(0.97);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 0.87rem;
  border-radius: var(--radius-pill);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--muted);
  font-size: 0.92rem;
  border-bottom: 1px solid transparent;
}

.text-link svg {
  transition: transform 0.25s ease;
}

.text-link:hover {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.text-link:hover svg {
  transform: translateX(3px);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(216, 255, 62, 0.08);
  border: 1px solid rgba(216, 255, 62, 0.22);
  color: var(--primary);
  border-radius: 8px;
  padding: 4px 10px;
  font-size: 0.76rem;
  font-weight: 600;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  padding: 14px 0;
  background: rgba(11, 14, 18, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.nav-wrap {
  position: relative;
  max-width: 1300px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.nav-panel {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(23, 28, 35, 0.84);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.24);
  border-radius: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-right: 4px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #0B0E12;
  font-weight: 900;
  font-size: 1.4rem;
  border-radius: 13px 5px 13px 5px;
  letter-spacing: -0.06em;
  line-height: 1;
  box-shadow: 0 6px 14px rgba(216, 255, 62, 0.18);
}

.brand-name {
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  white-space: nowrap;
}

.brand-name small {
  display: block;
  font-size: 0.65rem;
  color: var(--dim);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 5px;
  flex: 1;
}

.nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--muted);
  border: 1px solid transparent;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.nav-pill svg {
  width: 17px;
  height: 17px;
}

.nav-pill:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.nav-pill.active {
  background: var(--text);
  color: #0B0E12;
  border-color: transparent;
}

.nav-cta {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  color: var(--text);
  background: rgba(255,255,255,0.04);
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

/* Hero */
.cat-hero {
  position: relative;
  padding: 96px 0 110px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.cat-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-3.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.2;
  z-index: 0;
}

.cat-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,14,18,0.9) 0%, rgba(11,14,18,0.72) 40%, rgba(11,14,18,0.95) 100%);
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(216, 255, 62, 0.24);
  background: rgba(216, 255, 62, 0.06);
  color: var(--primary);
  padding: 7px 15px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 26px;
}

.hero-tag .pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(216,255,62,0.16);
}

.hero-copy .lead {
  font-size: 1.12rem;
  line-height: 1.85;
  color: var(--muted);
  max-width: 600px;
  margin-bottom: 32px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.trust-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,0.025);
  color: var(--muted);
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
}

.trust-chip span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

/* Device frame */
.hero-device {
  display: flex;
  justify-content: center;
  position: relative;
}

.device-frame {
  width: 326px;
  max-width: 100%;
  aspect-ratio: 9 / 16;
  background: var(--card-raise);
  border: 1px solid rgba(255,255,255,0.14);
  padding: 10px;
  border-radius: 38px;
  box-shadow: 0 40px 70px rgba(0,0,0,0.45);
  position: relative;
}

.device-screen {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 27px;
  overflow: hidden;
  background: #0e1216;
}

.device-screen .screen-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.55;
  object-fit: cover;
}

.screen-status {
  position: absolute;
  top: 16px;
  left: 24px;
  right: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  opacity: 0.9;
  letter-spacing: 0.02em;
  z-index: 2;
}

.screen-status .dots {
  display: flex;
  gap: 4px;
}

.screen-status .dots i {
  display: block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary);
}

.screen-content {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px 22px 26px;
  background: linear-gradient(0deg, rgba(11,14,18,0.92) 8%, rgba(11,14,18,0.2) 80%, transparent);
  z-index: 2;
}

.screen-content .mini {
  font-size: 0.72rem;
  color: var(--primary);
  margin-bottom: 6px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.screen-content .mini-title {
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
  color: #fff;
}

.screen-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #0B0E12;
  border-radius: var(--radius-pill);
  padding: 13px 18px;
  font-weight: 800;
  font-size: 0.9rem;
  box-shadow: 0 10px 30px rgba(216,255,62,0.2);
}

.screen-cta small {
  font-weight: 500;
  opacity: 0.7;
  margin-left: 4px;
}

/* Feature cards */
.defense-section {
  background: var(--bg);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.def-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 24px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  overflow: hidden;
}

.def-card::after {
  content: "";
  position: absolute;
  width: 72px;
  height: 72px;
  border-radius: 32px;
  top: -34px;
  right: -22px;
  background: rgba(216,255,62,0.08);
  transform: rotate(18deg);
}

.def-card:hover {
  transform: translateY(-6px);
  border-color: rgba(216,255,62,0.28);
  box-shadow: var(--shadow-hover);
}

.card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: rgba(216,255,62,0.1);
  color: var(--primary);
  margin-bottom: 20px;
}

.card-icon.orange {
  background: rgba(255,122,45,0.12);
  color: var(--accent);
}

.card-icon.cyan {
  background: rgba(0,224,198,0.1);
  color: var(--cyan);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.def-card h3 {
  font-size: 1.08rem;
}

.def-card p {
  font-size: 0.89rem;
  line-height: 1.8;
  margin-bottom: 0;
}

/* Risk list */
.risk-section {
  background: transparent;
  padding-top: 60px;
  padding-bottom: 60px;
}

.risk-panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 46px 44px;
  box-shadow: var(--shadow);
}

.risk-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 28px;
}

.risk-head p {
  max-width: 520px;
}

.risk-list {
  margin-top: 12px;
}

.risk-row {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 24px 8px;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s ease, transform 0.25s ease;
  border-radius: 14px;
}

.risk-row:last-child {
  border-bottom: none;
}

.risk-row:hover {
  background: var(--card-raise);
  transform: translateX(5px);
}

.risk-num {
  font-size: 1.9rem;
  font-weight: 900;
  line-height: 1;
  color: var(--primary);
  opacity: 0.8;
  font-feature-settings: "tnum";
  width: 55px;
  text-align: center;
}

.risk-row:nth-child(odd) .risk-num {
  color: var(--accent);
}

.risk-content {
  flex: 1;
}

.risk-content h3 {
  margin-bottom: 6px;
  font-size: 1.04rem;
}

.risk-content p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

.risk-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  font-size: 0.87rem;
  font-weight: 700;
  color: var(--muted);
  padding: 8px 4px;
  border-bottom: 1px solid transparent;
}

.risk-action:hover {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Split section */
.step-split {
  background: var(--bg);
}

.split-panel {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.split-media {
  min-height: 360px;
  position: relative;
}

.split-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11,14,18,0) 50%, rgba(11,14,18,0.86) 100%);
}

.split-media img {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
}

.split-body {
  padding: 52px 50px;
}

.split-body h2 {
  margin-bottom: 12px;
}

.split-body .sub {
  margin-bottom: 30px;
  max-width: 480px;
}

.step-list {
  display: grid;
  gap: 0;
}

.step-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.step-item:last-child {
  border-bottom: none;
}

.step-item:first-child {
  padding-top: 0;
}

.step-index {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: rgba(216,255,62,0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1rem;
  box-shadow: inset 0 0 0 1px rgba(216,255,62,0.18);
  flex-shrink: 0;
}

.step-item:nth-child(2) .step-index {
  color: var(--accent);
  background: rgba(255,122,45,0.1);
  box-shadow: inset 0 0 0 1px rgba(255,122,45,0.18);
}

.step-item:nth-child(3) .step-index {
  color: var(--cyan);
  background: rgba(0,224,198,0.08);
  box-shadow: inset 0 0 0 1px rgba(0,224,198,0.2);
}

.step-item-content h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.step-item-content p {
  font-size: 0.88rem;
  line-height: 1.8;
  margin-bottom: 0;
}

/* Check panel / loginArea */
.check-section {
  background: transparent;
  padding-top: 40px;
  padding-bottom: 40px;
}

.check-panel {
  background: var(--card-raise);
  border: 1px solid rgba(216,255,62,0.16);
  border-radius: var(--radius-lg);
  padding: 56px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
  box-shadow: var(--shadow);
}

.check-panel h2 {
  color: #fff;
}

.check-panel .tag {
  margin-bottom: 18px;
}

.check-list {
  display: grid;
  gap: 14px;
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--line);
  padding: 16px 18px;
  border-radius: 15px;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.check-item:hover {
  border-color: rgba(0,224,198,0.3);
  background: rgba(0,224,198,0.04);
}

.check-ico {
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border-radius: 50%;
  background: rgba(0,224,198,0.14);
  color: var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  flex-shrink: 0;
}

.check-item strong {
  display: block;
  color: var(--text);
  font-size: 0.91rem;
  font-weight: 700;
}

.check-item span {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.6;
}

/* FAQ */
.faq-section {
  background: transparent;
  padding-top: 70px;
  padding-bottom: 70px;
}

.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 18px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.faq-item[open],
.faq-item:hover {
  border-color: rgba(216,255,62,0.26);
  background: var(--card-raise);
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 700;
  color: var(--text);
  font-size: 0.98rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  color: var(--primary);
  font-size: 1.1rem;
  font-weight: 500;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.faq-item[open] summary::after {
  content: "−";
  background: var(--primary);
  color: #0B0E12;
  border-color: var(--primary);
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 22px;
  color: var(--muted);
  font-size: 0.91rem;
  line-height: 1.8;
}

.faq-answer a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(0,224,198,0.3);
}

/* Final CTA */
.final-cta {
  padding-top: 40px;
  padding-bottom: 100px;
}

.cta-card {
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 60px 60px 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(216,255,62,0.06);
  top: -120px;
  right: 30px;
}

.cta-card h2 {
  margin-bottom: 10px;
}

.cta-card p {
  max-width: 580px;
  margin-bottom: 0;
}

.cta-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* Footer */
.site-footer {
  background: #090C10;
  border-top: 1px solid var(--line);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 40px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.8;
  max-width: 340px;
  margin-top: 16px;
}

.footer-title {
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
}

.footer-link-list {
  display: grid;
  gap: 10px;
}

.footer-link-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--muted);
  line-height: 1.4;
}

.footer-link-list a:hover {
  color: var(--primary);
}

.footer-link-list .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--dim);
  transition: background 0.2s ease;
}

.footer-link-list a:hover .dot {
  background: var(--primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 24px;
  color: var(--dim);
  font-size: 0.78rem;
}

/* Responsive */
@media (max-width: 1100px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .device-frame {
    max-width: 300px;
  }

  .split-body {
    padding: 38px 32px;
  }
}

@media (max-width: 900px) {
  .section {
    padding: 74px 0;
  }

  .nav-panel {
    flex-wrap: wrap;
  }

  .main-nav {
    display: none;
    width: 100%;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    background: var(--card-raise);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 10px;
    margin-top: 10px;
  }

  .main-nav.open {
    display: flex;
  }

  .nav-pill {
    justify-content: flex-start;
    width: 100%;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-cta {
    margin-left: auto;
  }

  .split-panel {
    grid-template-columns: 1fr;
  }

  .split-media {
    min-height: 280px;
  }

  .split-media::after {
    display: none;
  }

  .split-media img {
    position: static;
    min-height: 280px;
  }

  .check-panel {
    grid-template-columns: 1fr;
    padding: 42px 32px;
  }

  .risk-panel {
    padding: 32px 24px;
  }
}

@media (max-width: 768px) {
  .brand-name small {
    display: none;
  }

  .hero-trust {
    gap: 8px;
  }

  .trust-chip {
    padding: 5px 10px;
    font-size: 0.74rem;
  }

  .risk-row {
    display: grid;
    grid-template-columns: 44px 1fr auto;
    gap: 12px;
    padding: 18px 0;
  }

  .risk-num {
    font-size: 1.5rem;
    width: 40px;
  }

  .risk-action {
    grid-column: 2 / 3;
    padding-top: 2px;
  }

  .check-panel {
    padding: 34px 24px;
  }

  .cta-card {
    padding: 40px 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .section {
    padding: 58px 0;
  }

  h1 {
    font-size: clamp(2.2rem, 9vw, 3rem);
  }

  h2 {
    font-size: 1.5rem;
  }

  .nav-wrap {
    padding-left: 14px;
    padding-right: 14px;
  }

  .nav-panel {
    gap: 8px;
    padding: 8px 10px;
    border-radius: 20px;
  }

  .brand {
    gap: 9px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand-name {
    font-size: 0.95rem;
  }

  .nav-cta .btn-sm {
    padding: 8px 13px;
    font-size: 0.78rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .def-card {
    padding: 24px 20px;
  }

  .risk-panel {
    padding: 24px 15px;
    border-radius: 20px;
  }

  .risk-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .split-body {
    padding: 28px 20px;
  }

  .step-item {
    gap: 14px;
  }

  .cta-btns,
  .hero-buttons {
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .faq-item summary {
    padding: 17px 18px;
  }

  .faq-answer {
    padding: 0 18px 20px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* roulang page: category4 */
:root {
  --bg: #0B0E12;
  --surface: #12161B;
  --surface-2: #171C23;
  --line: rgba(255, 255, 255, 0.08);
  --text: #F2F4F7;
  --muted: #9AA3B2;
  --dim: #5D6470;
  --acid: #D8FF3E;
  --orange: #FF7A2D;
  --cyan: #00E0C6;
  --radius-xl: 28px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.22);
  --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(216, 255, 62, 0.14);
  --font: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 7% 10%, rgba(216, 255, 62, 0.05), transparent 30%),
    radial-gradient(circle at 92% 4%, rgba(0, 224, 198, 0.05), transparent 32%),
    radial-gradient(circle at 50% 90%, rgba(255, 122, 45, 0.04), transparent 36%);
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

button,
input,
textarea {
  font-family: inherit;
  border: none;
  background: none;
  color: inherit;
}

svg {
  flex-shrink: 0;
}

.container {
  width: min(1180px, 100% - 48px);
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 24px 6px;
}

.site-header .nav-wrap {
  max-width: 1320px;
  margin-inline: auto;
}

.nav-panel {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(11, 14, 18, 0.76);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 10px 14px;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.32);
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 6px 12px 6px 4px;
  border-radius: 18px;
  flex-shrink: 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: var(--acid);
  color: #0B0E12;
  font-weight: 900;
  font-size: 1.4rem;
  border-radius: 14px 6px 14px 6px;
  box-shadow: 0 8px 20px rgba(216, 255, 62, 0.22);
}

.brand-name {
  font-weight: 800;
  font-size: 1.06rem;
  letter-spacing: 0.02em;
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name small {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--acid);
  letter-spacing: 0.1em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-inline: auto;
}

.nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 13px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted);
  border: 1px solid transparent;
  white-space: nowrap;
  transition: all 0.25s ease;
}

.nav-pill svg {
  width: 16px;
  height: 16px;
}

.nav-pill:hover {
  color: #fff;
  background: #20272E;
  border-color: rgba(255, 255, 255, 0.06);
}

.nav-pill.active {
  color: var(--acid);
  background: rgba(216, 255, 62, 0.10);
  border-color: rgba(216, 255, 62, 0.22);
  position: relative;
}

.nav-pill.active svg {
  color: var(--acid);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-toggle {
  width: 38px;
  height: 38px;
  display: none;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: var(--surface);
  border-radius: 12px;
  cursor: pointer;
  color: var(--text);
}

.nav-toggle svg {
  width: 21px;
  height: 21px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease, background 0.3s ease, box-shadow 0.3s ease, color 0.3s ease;
  white-space: nowrap;
}

.btn svg {
  width: 15px;
  height: 15px;
  transition: transform 0.25s ease;
}

.btn:hover svg {
  transform: translateX(3px);
}

.btn-primary {
  background: var(--acid);
  color: #0B0E12;
  padding: 12px 22px;
  box-shadow: 0 8px 22px rgba(216, 255, 62, 0.18);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: #E0FF6A;
  box-shadow: 0 14px 30px rgba(216, 255, 62, 0.26);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 12px 22px;
}

.btn-ghost:hover {
  border-color: rgba(216, 255, 62, 0.5);
  background: rgba(216, 255, 62, 0.06);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 9px 16px;
  font-size: 0.84rem;
}

.btn-lg {
  padding: 14px 26px;
  font-size: 1rem;
}

.hero {
  padding: 72px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 60px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--acid);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(216, 255, 62, 0.08);
  border: 1px solid rgba(216, 255, 62, 0.15);
  padding: 7px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}

.eyebrow i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--acid);
  display: inline-block;
}

.hero h1 {
  font-size: clamp(2.55rem, 6vw, 4.7rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}

.hero h1 .hero-em {
  display: block;
  color: var(--acid);
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 30px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.trust-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.trust-list li {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--muted);
}

.trust-list li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 224, 198, 0.1);
}

.hero-media {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-card);
  background: var(--surface);
}

.hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.09), transparent 21%, transparent 70%, rgba(0, 224, 198, 0.08));
  pointer-events: none;
}

.hero-media img {
  width: 100%;
  height: 580px;
  object-fit: cover;
}

.media-chip {
  position: absolute;
  left: 18px;
  bottom: 18px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(11, 14, 18, 0.75);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--text);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
}

.media-chip i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--acid);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

.section-space {
  padding: 90px 0;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 44px;
}

.section-head h2 {
  font-size: clamp(1.8rem, 3.6vw, 2.7rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.section-head h2 small {
  display: block;
  font-size: 0.9rem;
  color: var(--acid);
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.section-head-des {
  max-width: 440px;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.85;
}

.section-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.86rem;
  color: var(--muted);
}

.section-link svg {
  width: 14px;
  height: 14px;
}

.section-link:hover {
  color: var(--acid);
}

.section-link:hover svg {
  transform: translateX(3px);
}

/* defense cards */

.defense-block {
  position: relative;
}

.defense-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.def-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px 22px 24px;
  min-height: 230px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.def-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--orange);
  transform: scaleX(0.3);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.def-card::after {
  content: "";
  position: absolute;
  right: -45px;
  bottom: -45px;
  width: 112px;
  height: 112px;
  border-radius: 50%;
  background: rgba(216, 255, 62, 0.04);
  transition: transform 0.4s ease;
}

.def-card:hover {
  background: var(--surface-2);
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(216, 255, 62, 0.18);
}

.def-card:hover::before {
  transform: scaleX(1);
}

.def-num {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 2rem;
  font-weight: 800;
  color: rgba(216, 255, 62, 0.45);
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.def-num span {
  display: block;
  width: 1px;
  height: 30px;
  background: var(--line);
}

.def-card h3 {
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.def-card p {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.8;
}

/* scenario flow */

.scenario-section {
  background: linear-gradient(0deg, rgba(18, 22, 27, 0.52), rgba(18, 22, 27, 0.28));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.scenario-card {
  background: rgba(18, 22, 27, 0.76);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  position: relative;
  transition: all 0.3s ease;
}

.scenario-card:hover {
  border-color: rgba(216, 255, 62, 0.22);
  transform: translateY(-4px);
  background: var(--surface-2);
}

.scenario-id {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.18em;
}

.scenario-card h3 {
  font-size: 1.16rem;
  margin-top: 14px;
  margin-bottom: 12px;
  font-weight: 700;
}

.scenario-card p {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.9;
}

.scenario-tag {
  display: inline-block;
  margin-top: 18px;
  font-size: 0.76rem;
  padding: 5px 10px;
  border-radius: 8px;
  color: var(--cyan);
  background: rgba(0, 224, 198, 0.07);
  border: 1px solid rgba(0, 224, 198, 0.14);
}

.split-block {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 60px;
  align-items: center;
}

.split-media {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
  background: var(--surface);
}

.split-media img {
  width: 100%;
  height: 470px;
  object-fit: cover;
}

.split-content .eyebrow {
  margin-bottom: 14px;
}

.split-content h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  line-height: 1.3;
  margin-bottom: 18px;
  font-weight: 800;
}

.split-content p {
  color: var(--muted);
  line-height: 1.9;
  font-size: 0.94rem;
  margin-bottom: 22px;
}

.check-list {
  list-style: none;
  display: grid;
  gap: 12px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: #CBD2DD;
  font-size: 0.88rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  padding: 12px 15px;
  border-radius: var(--radius-md);
}

.check-list li::before {
  content: "";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 4px rgba(216, 255, 62, 0.08);
}

/* tip block */

.tip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.tip-card {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  padding: 28px 24px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.tip-card:hover {
  border-color: rgba(255, 122, 45, 0.28);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  background: var(--surface-2);
}

.tip-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: rgba(216, 255, 62, 0.08);
  color: var(--acid);
  margin-bottom: 20px;
}

.tip-icon svg {
  width: 22px;
  height: 22px;
}

.tip-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  font-weight: 700;
}

.tip-card p {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.9;
}

/* faq */

.faq-grid {
  max-width: 940px;
  margin-inline: auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.faq-item[open] {
  border-color: rgba(216, 255, 62, 0.2);
  background: var(--surface-2);
}

.faq-item summary {
  padding: 19px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.94rem;
  list-style: none;
  color: var(--text);
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 400;
  line-height: 1;
  color: var(--acid);
  transition: transform 0.3s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 22px 20px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.9;
}

/* cta band */

.cta-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  padding: 46px 44px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.cta-card::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -80px;
  width: 260px;
  height: 260px;
  background: rgba(216, 255, 62, 0.07);
  filter: blur(20px);
  border-radius: 50%;
}

.cta-card h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 10px;
}

.cta-card p {
  color: var(--muted);
  max-width: 500px;
  font-size: 0.94rem;
}

.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* footer */

.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--line);
  padding: 66px 0 26px;
  margin-top: 120px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}

.footer-brand p {
  color: var(--muted);
  font-size: 0.87rem;
  line-height: 1.85;
  margin-top: 16px;
  max-width: 340px;
}

.footer-title {
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 700;
  margin-bottom: 14px;
}

.footer-link-list {
  display: grid;
  gap: 8px;
}

.footer-link-list a {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--dim);
  font-size: 0.84rem;
  transition: color 0.25s ease, transform 0.25s ease;
}

.footer-link-list a:hover {
  color: var(--acid);
  transform: translateX(3px);
}

.footer-link-list a .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--dim);
  transition: background 0.25s ease;
}

.footer-link-list a:hover .dot {
  background: var(--acid);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  color: var(--dim);
  font-size: 0.76rem;
}

@media (max-width: 1160px) {
  .defense-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-media img {
    height: 500px;
  }

  .split-media img {
    height: 420px;
  }
}

@media (max-width: 980px) {
  .nav-panel {
    flex-wrap: wrap;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: #0B0E12;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 10px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.48);
  }

  .nav-open .main-nav {
    display: flex;
  }

  .nav-pill {
    padding: 12px 14px;
  }

  .nav-toggle {
    display: grid;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-media img {
    height: 450px;
  }

  .split-block {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .split-media img {
    height: 380px;
  }

  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .tip-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 36px, 1180px);
  }

  .site-header {
    padding: 10px 12px 4px;
  }

  .brand {
    padding-left: 2px;
  }

  .brand-name {
    font-size: 0.95rem;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 1.15rem;
  }

  .section-space {
    padding: 56px 0;
  }

  .defense-grid {
    grid-template-columns: 1fr;
  }

  .section-head h2 {
    font-size: 1.7rem;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .btn-lg {
    padding: 13px 18px;
  }

  .hero-media img {
    height: 300px;
  }

  .media-chip {
    left: 12px;
    bottom: 12px;
  }

  .cta-card {
    padding: 30px 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

.reveal {
  animation: revealUp 0.7s ease both;
}

@keyframes revealUp {
  0% {
    opacity: 0;
    transform: translateY(18px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}