:root{
  --ink:#08262e;
  --ink-2:#3c6270;
  --ink-3:#5c7e88;
  --teal:#0fa3a3;
  --teal-d:#0b6b76;
  --teal-l:#e6f6f7;
  --line:#dcecee;
  --card:#ffffff;
  --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:
    radial-gradient(900px 520px at 88% -6%, rgba(15,163,163,.12), transparent 62%),
    radial-gradient(760px 460px at 2% 22%, rgba(30,200,192,.10), transparent 62%),
    linear-gradient(180deg,#f2f9fa 0%,#f8fcfc 42%,#eef8f9 100%);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
a{color:var(--teal-d)}
h1,h2,h3{color:var(--ink);letter-spacing:-.01em}
p{margin:0 0 14px}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
.sec{padding:72px 0}
.sec-tight{padding:56px 0}
section[id]{scroll-margin-top:84px}
.sec-head{max-width:780px;margin:0 auto 42px;text-align:center}
.sec-tag{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--teal-d);background:#e2f4f5;border:1px solid #cdebee;padding:5px 15px;border-radius:999px;margin-bottom:14px}
.sec-head h2{font-size:clamp(23px,2.9vw,33px);line-height:1.36;margin:0 0 14px}
.sec-head p{color:var(--ink-2);font-size:16px;margin:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;font-size:15.5px;font-weight:600;text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease}
.btn-primary{background:linear-gradient(135deg,#12b3ac,#0b7783);color:#fff;box-shadow:0 10px 24px rgba(11,119,131,.26)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(11,119,131,.34)}
.btn-ghost{background:rgba(255,255,255,.08);color:#e8fcfd;border-color:rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--teal-d);border-color:#bfe2e6}
.btn-outline:hover{background:var(--teal-l);transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14.5px}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:16px;min-height:66px;position:relative}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:18px;flex:0 0 auto}
.brand img{width:34px;height:34px;object-fit:contain;display:block;border-radius:9px;background:var(--teal-l)}
.nav-links{display:flex;align-items:center;gap:0;margin-left:auto;flex-wrap:wrap;justify-content:flex-end}
.nav-links a{display:block;padding:8px 12px;font-size:14.5px;color:var(--ink-2);text-decoration:none;border-radius:8px;white-space:nowrap;transition:color .2s ease,background .2s ease}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--teal-d);background:var(--teal-l)}
.nav-cta{flex:0 0 auto;margin-left:14px;padding:10px 20px;font-size:14.5px}
.nav-toggle{display:none;width:42px;height:38px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:0}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-2);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
@media(max-width:1000px){
  .nav-links{position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;margin-left:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 16px 30px rgba(8,50,60,.10);padding:8px 12px 14px}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 10px;font-size:15px;border-bottom:1px solid #eff7f8;border-radius:6px}
  .nav-links a:last-child{border-bottom:0}
  .nav-toggle{display:flex;margin-left:auto;order:3}
  .nav-cta{margin-left:0;order:2}
}
@media(max-width:420px){
  .nav-cta{padding:9px 14px;font-size:13.5px}
  .brand{font-size:16px}
}

/* ===== Hero ===== */
.hero{
  position:relative;
  overflow:hidden;
  color:#eafcfd;
  background:
    radial-gradient(720px 420px at 78% 8%, rgba(30,200,192,.30), transparent 65%),
    radial-gradient(600px 380px at 6% 88%, rgba(11,119,131,.55), transparent 68%),
    linear-gradient(135deg,#04222b 0%,#06414f 48%,#0a6f7c 100%);
  padding:66px 0 74px;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:54px 54px;
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  width:520px;height:520px;right:-140px;top:-180px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(95,227,216,.28), transparent 68%);
  filter:blur(6px);
  animation:floatOrb 14s ease-in-out infinite alternate;
  pointer-events:none;
}
@keyframes floatOrb{
  from{transform:translate3d(0,0,0) scale(1)}
  to{transform:translate3d(-36px,42px,0) scale(1.08)}
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;padding:6px 16px;border-radius:999px;background:rgba(95,227,216,.14);border:1px solid rgba(95,227,216,.42);color:#8ff2e8;font-size:13px;font-weight:600;letter-spacing:.06em;margin-bottom:20px}
.hero h1{font-size:clamp(28px,4.4vw,46px);line-height:1.24;margin:0 0 18px;color:#ffffff;font-weight:800}
.hero-lead{max-width:580px;color:#bfe6ea;font-size:16.5px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-btn-main{padding:14px 32px;font-size:16px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:34px}
.stat-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.15);border-radius:14px;padding:15px 16px;transition:transform .3s ease,background .3s ease}
.stat-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.13)}
.stat-card strong{display:block;font-size:24px;line-height:1.2;color:#5fe3d8;font-weight:800}
.stat-card span{display:block;font-size:13px;color:#a9d3d8;margin-top:2px}
.model-panel{background:rgba(4,32,40,.52);border:1px solid rgba(95,227,216,.26);border-radius:20px;padding:24px;box-shadow:0 24px 56px rgba(0,0,0,.30);backdrop-filter:blur(6px)}
.panel-title{margin:0 0 4px;font-size:17px;font-weight:700;color:#ffffff;letter-spacing:.02em}
.panel-sub{margin:0 0 18px;font-size:13.5px;color:#9fcdd3}
.panel-chips{display:flex;flex-wrap:wrap;gap:8px}
.hero .chip{background:rgba(255,255,255,.09);color:#d6f5f7;border:1px solid rgba(255,255,255,.18)}
.hero .chip:hover{background:#12b3ac;color:#04222b;border-color:#12b3ac}
.panel-foot{margin:18px 0 0;padding-top:14px;border-top:1px solid rgba(255,255,255,.13);font-size:13px;color:#8fc3ca;letter-spacing:.02em}
@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero{padding:48px 0 54px}
  .model-panel{max-width:560px}
}
@media(max-width:600px){
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .stat-card strong{font-size:21px}
}

.chip{display:inline-block;padding:6px 13px;border-radius:999px;font-size:13px;font-weight:500;background:#eaf6f7;color:#0b6b76;border:1px solid #d2ebee;transition:background .25s ease,color .25s ease,transform .25s ease,border-color .25s ease}
.chip:hover{background:var(--teal);color:#fff;border-color:var(--teal);transform:translateY(-1px)}

/* ===== About ===== */
.about-head{max-width:880px;margin-bottom:38px}
.about-head h2{font-size:clamp(23px,2.9vw,33px);margin:0 0 16px;position:relative;padding-left:18px}
.about-head h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:5px;border-radius:3px;background:linear-gradient(180deg,#12b3ac,#0b7783)}
.about-head p{color:var(--ink-2);font-size:16px;max-width:840px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{background:#fff;border:1px solid #e2eff1;border-radius:var(--radius);padding:24px 22px;box-shadow:0 2px 10px rgba(8,60,70,.05);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.feature-card:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(8,80,90,.12);border-color:#b9e2e6}
.feature-card h3{margin:0 0 8px;font-size:17px}
.feature-card p{margin:0;font-size:14.5px;color:var(--ink-2)}
.tag-cloud{margin-top:34px;padding:24px;border-radius:var(--radius);background:linear-gradient(135deg,#eefafb,#f8fdfd);border:1px solid #dceff1}
.tag-cloud h3{margin:0 0 14px;font-size:16px;color:var(--teal-d)}
.tag-cloud .chip{margin:0 8px 8px 0}
@media(max-width:900px){.feature-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.feature-grid{grid-template-columns:1fr}}

/* ===== Service cards ===== */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.svc-card{position:relative;background:#fff;border:1px solid #e2eff1;border-radius:var(--radius);padding:34px 22px 22px;box-shadow:0 2px 10px rgba(8,60,70,.05);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.svc-card::before{content:"";position:absolute;left:22px;top:22px;width:28px;height:3px;border-radius:2px;background:linear-gradient(90deg,#12b3ac,#5fe3d8)}
.svc-card:hover{transform:translateY(-6px);box-shadow:0 18px 36px rgba(8,80,90,.13);border-color:#b9e2e6}
.svc-card h3{margin:0 0 8px;font-size:16.5px}
.svc-card p{margin:0 0 12px;font-size:14px;color:var(--ink-2)}
.svc-tag{display:inline-block;font-size:12px;color:var(--teal-d);background:#eef8f9;border:1px solid #d5edef;border-radius:6px;padding:3px 9px;margin:0 6px 6px 0}
@media(max-width:1040px){.svc-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.svc-grid{grid-template-columns:1fr}}

/* ===== Pipeline ===== */
.band{background:linear-gradient(180deg,rgba(228,246,247,.85),rgba(248,253,253,.92));border-top:1px solid #e2eff1;border-bottom:1px solid #e2eff1}
.pipe-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pipe-card{background:#fff;border:1px solid #e0eef0;border-radius:var(--radius);padding:24px 22px;box-shadow:0 2px 10px rgba(8,60,70,.05);transition:transform .3s ease,box-shadow .3s ease}
.pipe-card:hover{transform:translateY(-5px);box-shadow:0 16px 32px rgba(8,80,90,.12)}
.pipe-card h3{margin:0 0 10px;font-size:16.5px;display:flex;align-items:center;gap:8px}
.pipe-card h3::before{content:"";width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#12b3ac,#0b7783)}
.pipe-card p{margin:0;font-size:14px;color:var(--ink-2)}
@media(max-width:1040px){.pipe-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.pipe-grid{grid-template-columns:1fr}}

/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.steps li{background:#fff;border:1px solid #e2eff1;border-radius:var(--radius);padding:24px 22px;box-shadow:0 2px 10px rgba(8,60,70,.05);transition:transform .3s ease,box-shadow .3s ease}
.steps li:hover{transform:translateY(-5px);box-shadow:0 16px 32px rgba(8,80,90,.12)}
.step-no{display:inline-block;font-size:13px;font-weight:800;color:#fff;background:linear-gradient(135deg,#12b3ac,#0b7783);border-radius:8px;padding:3px 10px;margin-bottom:12px;letter-spacing:.06em}
.steps h3{margin:0 0 8px;font-size:16.5px}
.steps p{margin:0;font-size:14px;color:var(--ink-2)}
@media(max-width:1040px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}

/* ===== Solutions ===== */
.sol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sol-card{background:linear-gradient(160deg,#ffffff,#f6fcfc);border:1px solid #e2eff1;border-left:4px solid #12b3ac;border-radius:14px;padding:22px;transition:transform .3s ease,box-shadow .3s ease}
.sol-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(8,80,90,.11)}
.sol-card h3{margin:0 0 8px;font-size:16.5px}
.sol-card p{margin:0;font-size:14px;color:var(--ink-2)}
@media(max-width:900px){.sol-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.sol-grid{grid-template-columns:1fr}}

/* ===== Network ===== */
.net-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.net-item{background:#fff;border:1px solid #e2eff1;border-radius:14px;padding:20px;display:flex;gap:14px;align-items:flex-start;transition:box-shadow .3s ease,transform .3s ease}
.net-item:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(8,80,90,.10)}
.net-dot{flex:0 0 auto;width:10px;height:10px;border-radius:50%;margin-top:8px;background:linear-gradient(135deg,#12b3ac,#5fe3d8);box-shadow:0 0 0 4px rgba(18,179,172,.14)}
.net-item h3{margin:0 0 4px;font-size:16px}
.net-item p{margin:0;font-size:13.5px;color:var(--ink-2)}
@media(max-width:900px){.net-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.net-grid{grid-template-columns:1fr}}

/* ===== Cases ===== */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.case-item{margin:0;background:#fff;border:1px solid #e2eff1;border-radius:var(--radius);overflow:hidden;box-shadow:0 2px 12px rgba(8,60,70,.06);transition:transform .3s ease,box-shadow .3s ease}
.case-item:hover{transform:translateY(-5px);box-shadow:0 18px 38px rgba(8,80,90,.14)}
.case-media{overflow:hidden;aspect-ratio:16/10;background:#eaf6f7}
.case-media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s ease}
.case-item:hover .case-media img{transform:scale(1.05)}
.case-item figcaption{padding:18px 20px}
.case-item figcaption strong{display:block;font-size:16px;color:var(--ink);margin-bottom:4px}
.case-item figcaption span{font-size:13.5px;color:var(--ink-3)}
@media(max-width:700px){.case-grid{grid-template-columns:1fr}}

/* ===== Compare ===== */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius);border:1px solid var(--line);background:#fff;box-shadow:0 2px 12px rgba(8,60,70,.05)}
table{border-collapse:collapse;width:100%;min-width:760px;font-size:14.5px}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid #eaf4f5;vertical-align:top}
thead th{background:#eef8f9;color:var(--teal-d);font-weight:600;white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:#f6fcfc}
td strong{color:var(--teal-d)}
.score-card{margin-top:26px;display:grid;grid-template-columns:.62fr 1.38fr;gap:28px;align-items:center;background:linear-gradient(135deg,#053946,#0a6f7c 65%,#0fa3a3);border-radius:20px;padding:32px;color:#e6fbfc;box-shadow:0 20px 44px rgba(6,60,72,.24)}
.score-main{text-align:center;border-right:1px solid rgba(255,255,255,.18);padding-right:20px}
.score-label{margin:0 0 6px;font-size:13.5px;color:#9bd7dd;letter-spacing:.06em}
.score-num{margin:0;font-size:52px;font-weight:800;line-height:1;color:#5fe3d8}
.score-num span{font-size:20px;color:#9bd7dd;font-weight:600;margin-left:2px}
.score-stars{margin:10px 0 2px;font-size:18px;letter-spacing:3px;color:#ffd166}
.score-note{margin:0;font-size:14px;color:#cdeef1}
.score-points{display:grid;grid-template-columns:1fr 1fr;gap:10px 20px}
.score-points li{position:relative;padding-left:20px;font-size:14.5px;color:#d9f5f7}
.score-points li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:#5fe3d8;transform:rotate(45deg)}
@media(max-width:860px){
  .score-card{grid-template-columns:1fr;gap:22px}
  .score-main{border-right:0;border-bottom:1px solid rgba(255,255,255,.18);padding:0 0 20px}
  .score-points{grid-template-columns:1fr}
}

/* ===== Token ===== */
.token-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.token-card{background:#fff;border:1px solid #e2eff1;border-top:3px solid #12b3ac;border-radius:14px;padding:24px 22px;transition:transform .3s ease,box-shadow .3s ease}
.token-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(8,80,90,.11)}
.token-card h3{margin:0 0 8px;font-size:16.5px}
.token-card p{margin:0;font-size:14px;color:var(--ink-2)}
.token-note{margin-top:18px;font-size:13.5px;color:var(--ink-3);text-align:center}
@media(max-width:1040px){.token-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.token-grid{grid-template-columns:1fr}}

/* ===== Reviews ===== */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review-card{background:#fff;border:1px solid #e2eff1;border-radius:var(--radius);padding:24px 22px;box-shadow:0 2px 10px rgba(8,60,70,.05);position:relative;transition:transform .3s ease,box-shadow .3s ease}
.review-card::after{content:"”";position:absolute;right:20px;top:6px;font-size:52px;line-height:1;color:#dff2f3;font-family:Georgia,serif}
.review-card:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(8,80,90,.12)}
.review-stars{margin:0 0 10px;color:#f2b01e;font-size:14px;letter-spacing:2px}
.review-text{margin:0 0 16px;font-size:14.5px;color:var(--ink-2);position:relative;z-index:1}
.review-who{margin:0;font-size:13.5px;color:var(--teal-d);font-weight:600}
@media(max-width:960px){.review-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.review-grid{grid-template-columns:1fr}}

/* ===== Form ===== */
.form-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:32px;align-items:start}
.form-intro h2{font-size:clamp(22px,2.7vw,31px);margin:0 0 14px}
.form-intro p{color:var(--ink-2);font-size:15.5px}
.form-steps{margin-top:20px;display:grid;gap:12px}
.form-steps li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--ink-2)}
.form-steps b{flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:var(--teal-l);color:var(--teal-d);font-size:12.5px;display:flex;align-items:center;justify-content:center;font-weight:700;margin-top:2px}
.form-card{background:#fff;border:1px solid #e2eff1;border-radius:18px;padding:28px;box-shadow:0 12px 30px rgba(8,80,90,.08)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-2)}
.field input,.field select,.field textarea{width:100%;font-family:inherit;font-size:15px;color:var(--ink);background:#f9fdfd;border:1px solid #d8ebee;border-radius:10px;padding:11px 14px;transition:border-color .25s ease,box-shadow .25s ease,background .25s ease}
.field textarea{min-height:112px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:#12b3ac;background:#fff;box-shadow:0 0 0 3px rgba(18,179,172,.14)}
.form-submit{width:100%;margin-top:6px}
.form-tip{margin:12px 0 0;font-size:12.5px;color:var(--ink-3);text-align:center}
@media(max-width:900px){
  .form-layout{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .form-card{padding:22px}
}

/* ===== Knowledge ===== */
.knowledge-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
.k-box{background:#fff;border:1px solid #e2eff1;border-radius:var(--radius);padding:26px;box-shadow:0 2px 10px rgba(8,60,70,.05)}
.k-box h3{margin:0 0 14px;font-size:17px;color:var(--teal-d)}
.help-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-2);padding:10px 0;border-bottom:1px dashed #e6f2f3}
.help-list li:last-child{border-bottom:0}
.help-list b{flex:0 0 auto;color:var(--teal);font-weight:700}
.wiki-cloud{margin-top:16px}
.wiki-cloud .chip{margin:0 8px 8px 0}
.news-list li{border-bottom:1px solid #eef7f8;padding:11px 0}
.news-list li:last-child{border-bottom:0}
.news-list a{display:flex;gap:10px;align-items:flex-start;text-decoration:none;color:var(--ink);font-size:14.5px;transition:color .25s ease,transform .25s ease}
.news-list a:hover{color:var(--teal-d);transform:translateX(3px)}
.news-list i{flex:0 0 auto;font-style:normal;font-size:12px;color:var(--teal-d);background:#eef8f9;border:1px solid #d5edef;border-radius:6px;padding:2px 8px;margin-top:3px}
@media(max-width:860px){.knowledge-grid{grid-template-columns:1fr}}

/* ===== FAQ ===== */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid #e2eff1;border-radius:12px;margin-bottom:12px;overflow:hidden;transition:box-shadow .3s ease,border-color .3s ease}
.faq-item:hover{border-color:#bde3e7;box-shadow:0 8px 20px rgba(8,80,90,.08)}
.faq-item summary{list-style:none;cursor:pointer;padding:17px 52px 17px 20px;font-size:15.5px;font-weight:600;color:var(--ink);position:relative;transition:color .25s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;border-right:2px solid var(--teal);border-bottom:2px solid var(--teal);transform:translateY(-70%) rotate(45deg);transition:transform .3s ease}
.faq-item[open] summary{color:var(--teal-d)}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-body{padding:0 20px 18px;font-size:14.5px;color:var(--ink-2);border-top:1px solid #eef7f8;padding-top:14px}

/* ===== Join ===== */
.join-card{display:grid;grid-template-columns:1.35fr .65fr;gap:26px;align-items:center;background:linear-gradient(120deg,#053946,#0a6f7c 70%,#12b3ac);border-radius:20px;padding:36px;color:#e6fbfc;box-shadow:0 20px 44px rgba(6,60,72,.22)}
.join-card h2{margin:0 0 12px;font-size:clamp(21px,2.6vw,29px);color:#ffffff}
.join-card p{margin:0;color:#cdeef1;font-size:15px;max-width:640px}
.join-actions{display:flex;justify-content:flex-end}
.join-actions .btn{background:#ffffff;color:#0b6b76;border-color:#ffffff}
.join-actions .btn:hover{background:#d9f5f7;transform:translateY(-2px)}
@media(max-width:860px){
  .join-card{grid-template-columns:1fr;padding:26px}
  .join-actions{justify-content:flex-start}
}

/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:26px;align-items:start}
.contact-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-item{background:#fff;border:1px solid #e2eff1;border-radius:14px;padding:18px 20px;transition:transform .3s ease,box-shadow .3s ease}
.contact-item:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(8,80,90,.10)}
.contact-item span{display:block;font-size:12.5px;color:var(--ink-3);margin-bottom:2px}
.contact-item strong{display:block;font-size:15.5px;color:var(--ink);word-break:break-all}
.contact-item a{text-decoration:none;color:var(--teal-d)}
.qr-card{background:#fff;border:1px solid #e2eff1;border-radius:16px;padding:22px;text-align:center;box-shadow:0 2px 10px rgba(8,60,70,.05)}
.qr-card img{width:100%;max-width:200px;height:auto;display:block;margin:0 auto 12px;border-radius:10px;background:#f3fafb}
.qr-card p{margin:0;font-size:13.5px;color:var(--ink-2)}
@media(max-width:860px){
  .contact-grid{grid-template-columns:1fr}
  .contact-list{grid-template-columns:1fr}
}

/* ===== Footer ===== */
.site-footer{background:#062a33;color:#bcdfe4;padding:46px 0 26px;margin-top:0}
.footer-top{display:grid;grid-template-columns:1.1fr 1.9fr;gap:32px;padding-bottom:26px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;color:#ffffff;font-weight:700;font-size:18px}
.footer-brand img{width:32px;height:32px;object-fit:contain;border-radius:8px;background:rgba(255,255,255,.1)}
.footer-desc{font-size:14px;color:#a9cdd3;margin:0 0 10px;max-width:340px}
.footer-url{font-size:14px;color:#8ce8df;margin:0}
.footer-url a{color:#8ce8df;text-decoration:none}
.footer-url a:hover{text-decoration:underline}
.footer-links h3{font-size:14.5px;margin:0 0 12px;color:#ffffff;letter-spacing:.04em}
.friend-links{display:flex;flex-wrap:wrap;gap:8px 10px}
.friend-links a{font-size:13.5px;color:#a9cdd3;text-decoration:none;padding:4px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);transition:background .25s ease,color .25s ease,border-color .25s ease}
.friend-links a:hover{background:#12b3ac;color:#04222b;border-color:#12b3ac}
.footer-bottom{padding-top:18px;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;align-items:center}
.footer-bottom p{margin:0;font-size:13px;color:#8fb8bf}
.footer-bottom a{color:#8ce8df;text-decoration:none}
.footer-bottom a:hover{text-decoration:underline}
@media(max-width:760px){
  .footer-top{grid-template-columns:1fr;gap:24px}
  .footer-bottom{justify-content:flex-start}
}

/* ===== Float tools ===== */
.float-tools{position:fixed;right:18px;bottom:22px;z-index:300;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.float-btn{width:48px;height:48px;border-radius:14px;border:1px solid #cfe9ec;background:#fff;color:var(--teal-d);font-size:14px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(8,80,90,.16);transition:transform .25s ease,background .25s ease,color .25s ease,opacity .25s ease;font-family:inherit;padding:0}
.float-btn:hover{transform:translateY(-3px);background:#12b3ac;color:#fff;border-color:#12b3ac}
.back-top{opacity:0;visibility:hidden;font-size:19px}
.back-top.show{opacity:1;visibility:visible}
.kefu-panel{position:absolute;right:0;bottom:56px;width:220px;background:#fff;border:1px solid #dceff1;border-radius:16px;padding:18px;box-shadow:0 18px 40px rgba(8,80,90,.20);display:none;text-align:center}
.kefu-panel.open{display:block}
.kefu-title{margin:0 0 12px;font-size:14.5px;font-weight:700;color:var(--teal-d)}
.kefu-panel img{width:100%;max-width:160px;height:auto;display:block;margin:0 auto 10px;border-radius:10px}
.kefu-line{margin:0 0 4px;font-size:13px;color:var(--ink-2)}
@media(max-width:520px){
  .float-tools{right:12px;bottom:16px}
  .float-btn{width:44px;height:44px}
  .kefu-panel{width:200px}
}

/* ===== Reveal ===== */
.js-on .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.js-on .reveal.visible{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero::after{animation:none}
  .js-on .reveal{opacity:1;transform:none;transition:none}
  .btn,.svc-card,.feature-card,.pipe-card,.steps li,.sol-card,.net-item,.case-item,.review-card,.token-card,.contact-item,.chip,.float-btn{transition:none}
}