/* ==========================================================================
   SNCIC 圣宁咨询 · 官网样式
   --------------------------------------------------------------------------
   结构：设计令牌 → 基础 → 布局 → 组件 → 页面块 → 响应式 → 动效降级
   原则：零外部依赖（字体/图标全部本地或内联），国内访问无阻塞
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  /* 品牌色（取自品牌标识 #00ADEE） */
  --brand:#0077A8;          /* 可读性达标的品牌主色（白底文字/按钮） */
  --brand-2:#00ADEE;        /* 品牌亮色：深色底、装饰、发光 */
  --brand-soft:#E6F6FD;

  /* 深色基准 */
  --ink:#0A1E2E;
  --navy:#0E2B42;
  --navy-2:#143A57;
  --navy-3:#1C4A6B;

  /* 中性色 */
  --text:#44596E;
  --text-2:#6B7F92;
  --line:#E3EBF2;
  --line-2:#CFDDE9;
  --surface:#F5F9FC;
  --surface-2:#ECF3F9;
  --white:#FFFFFF;

  /* 档位语义色 */
  --t1:#0077A8;   /* 标准版 */
  --t2:#0E9AA7;   /* 网关版 */
  --t3:#6D5BD0;   /* 物联版 */
  --t4:#D98324;   /* 行业插件 */

  /* 尺寸与阴影 */
  --r-xs:6px; --r-sm:10px; --r:14px; --r-lg:20px; --r-xl:28px;
  --sh-1:0 1px 2px rgba(10,30,46,.05), 0 1px 3px rgba(10,30,46,.05);
  --sh-2:0 4px 14px rgba(10,30,46,.07), 0 2px 5px rgba(10,30,46,.04);
  --sh-3:0 20px 44px -14px rgba(10,30,46,.20), 0 6px 18px -10px rgba(10,30,46,.10);
  --wrap:1160px;
  --tr:.22s cubic-bezier(.4,0,.2,1);
}

/* ---------- 2. 基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%; scroll-behavior:smooth; scroll-padding-top:96px}
body{
  margin:0; color:var(--text); background:var(--white);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px; line-height:1.75;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
img,svg{max-width:100%; display:block}
img{height:auto}
a{color:var(--brand); text-decoration:none; transition:color var(--tr)}
a:hover{color:var(--brand-2)}
h1,h2,h3,h4{color:var(--navy); line-height:1.3; letter-spacing:-.01em; margin:0}
p{margin:0 0 1em}
ul,ol{margin:0; padding-left:1.25em}
strong,b{color:var(--navy)}
hr{border:0; border-top:1px solid var(--line); margin:0}
::selection{background:var(--brand-2); color:#fff}
:focus-visible{outline:2px solid var(--brand-2); outline-offset:2px; border-radius:4px}
.sr-only{position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0}
.skip-link{position:absolute; left:-9999px; top:0; z-index:999; background:var(--brand-2); color:#fff; padding:10px 18px; border-radius:0 0 var(--r-sm) 0}
.skip-link:focus{left:0; color:#fff}

/* ---------- 3. 布局 ---------- */
.wrap{width:100%; max-width:var(--wrap); margin:0 auto; padding:0 20px}
.wrap--narrow{max-width:820px}
.sec{padding:clamp(56px,7vw,96px) 0}
.sec--tight{padding-top:clamp(30px,3.6vw,46px); padding-bottom:clamp(30px,3.6vw,46px)}
.sec--surface{background:var(--surface)}
.sec--dark{background:var(--ink); color:#C6D6E3}
.sec--dark h2,.sec--dark h3{color:#fff}
.sec--line{border-top:1px solid var(--line)}

.sec__head{max-width:760px; margin-bottom:clamp(30px,4vw,46px)}
.sec__head--center{margin-left:auto; margin-right:auto; text-align:center}
.kicker{
  display:inline-flex; align-items:center; gap:8px;
  font-size:12.5px; font-weight:700; letter-spacing:.18em; text-transform:uppercase;
  color:var(--brand); margin:0 0 14px;
}
.kicker::before{content:""; width:22px; height:2px; background:var(--brand-2); border-radius:2px}
.sec__head--center .kicker::after{content:""; width:22px; height:2px; background:var(--brand-2); border-radius:2px}
.sec__title{font-size:clamp(24px,3.1vw,34px); font-weight:800; margin:0 0 14px}
.sec__title em{font-style:normal; color:var(--brand)}
.sec__lead{color:var(--text-2); font-size:clamp(15px,1.6vw,16.5px); margin:0}
.sec--dark .sec__lead{color:#9FB6C7}
.sec--dark .kicker{color:var(--brand-2)}

.grid{display:grid; gap:20px; grid-template-columns:1fr}
@media(min-width:700px){.grid--2,.grid--3,.grid--4{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1000px){.grid--3{grid-template-columns:repeat(3,1fr)} .grid--4{grid-template-columns:repeat(4,1fr)}}

/* ---------- 4. 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:13px 26px; border-radius:var(--r-sm); border:1.5px solid transparent;
  font-size:15px; font-weight:700; line-height:1; cursor:pointer; font-family:inherit;
  transition:transform var(--tr), box-shadow var(--tr), background var(--tr), color var(--tr), border-color var(--tr);
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px); text-decoration:none}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--brand); color:#fff; box-shadow:0 6px 18px -6px rgba(0,119,168,.5)}
.btn--primary:hover{background:#00638E; color:#fff; box-shadow:0 10px 26px -8px rgba(0,119,168,.6)}
.btn--accent{background:var(--brand-2); color:#04222F; box-shadow:0 6px 20px -6px rgba(0,173,238,.55)}
.btn--accent:hover{background:#2BC0F4; color:#04222F}
.btn--ghost{border-color:rgba(255,255,255,.4); color:#fff}
.btn--ghost:hover{border-color:#fff; background:rgba(255,255,255,.1); color:#fff}
.btn--line{border-color:var(--line-2); color:var(--navy); background:#fff}
.btn--line:hover{border-color:var(--brand); color:var(--brand); background:#fff}
.btn--sm{padding:9px 18px; font-size:14px}
.btn-row{display:flex; flex-wrap:wrap; gap:14px; align-items:center}
.btn-row--center{justify-content:center}
.btn svg{width:16px; height:16px; flex:none}

/* ---------- 5. 页眉 ---------- */
.hd{
  position:sticky; top:0; z-index:100;
  background:rgba(10,30,46,.82);
  -webkit-backdrop-filter:saturate(180%) blur(16px); backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background var(--tr), box-shadow var(--tr);
}
.hd.is-scrolled{background:rgba(8,24,37,.95); box-shadow:0 8px 30px -12px rgba(0,0,0,.5)}
.hd__inner{display:flex; align-items:center; gap:20px; min-height:68px}
.brand{display:flex; align-items:center; gap:10px; color:#fff; flex:none}
.brand:hover{color:#fff}
.brand img{height:30px; width:auto}
.brand__tag{
  font-size:12.5px; color:#8FA9BD; letter-spacing:.08em; white-space:nowrap; font-weight:500;
  padding-left:12px; border-left:1px solid rgba(255,255,255,.18);
}
@media(max-width:560px){.brand__tag{display:none}}
.nav{display:flex; align-items:center; gap:2px; margin-left:auto}
.nav a{
  position:relative; color:#C6D6E3; font-size:14.5px; font-weight:500;
  padding:9px 14px; border-radius:var(--r-xs); white-space:nowrap;
}
.nav a:hover{color:#fff; background:rgba(255,255,255,.07)}
.nav a.is-active{color:#fff; font-weight:700}
.nav a.is-active::after{
  content:""; position:absolute; left:14px; right:14px; bottom:2px; height:2px;
  background:var(--brand-2); border-radius:2px;
}
.hd__cta{display:flex; align-items:center; gap:10px; flex:none; margin-left:8px}
.hd__phone{display:inline-flex; align-items:center; gap:7px; color:#fff; font-size:14px; font-weight:700; letter-spacing:.02em}
.hd__phone svg{width:15px; height:15px; fill:var(--brand-2)}
.hd__phone:hover{color:var(--brand-2)}
.nav__cta{display:none}
.nav-toggle{
  display:none; width:42px; height:42px; margin-left:auto; padding:0;
  background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.16); border-radius:var(--r-xs);
  cursor:pointer; position:relative;
}
.nav-toggle span{position:absolute; left:11px; right:11px; height:2px; background:#fff; border-radius:2px; transition:transform var(--tr), opacity var(--tr)}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle span:nth-child(3){top:26px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 6. Hero ---------- */
.hero{position:relative; overflow:hidden; background:var(--ink); color:#DCE8F1}
.hero__bg{position:absolute; inset:0; z-index:0; pointer-events:none; overflow:hidden}
.hero__bg::before{
  content:""; position:absolute; inset:0; z-index:2;
  background:
    radial-gradient(900px 420px at 12% -10%, rgba(0,173,238,.30), transparent 62%),
    radial-gradient(760px 420px at 88% 8%, rgba(14,154,167,.24), transparent 60%),
    linear-gradient(180deg,#0A1E2E 0%,#0B2437 55%,#0E2B42 100%);
}
.hero__bg::after{
  content:""; position:absolute; inset:0; opacity:.5; z-index:3;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 20%,transparent 82%);
  mask-image:radial-gradient(circle at 50% 30%,#000 20%,transparent 82%);
}
/* 带实景照片的深色 Hero */
.hero__pic{position:absolute; inset:0; z-index:1; display:block}
.hero__pic img{width:100%; height:100%; object-fit:cover; object-position:78% 50%; opacity:.62}
.hero--photo .hero__bg::before{
  background:
    linear-gradient(90deg, rgba(10,30,46,.97) 0%, rgba(10,30,46,.90) 34%, rgba(10,30,46,.52) 70%, rgba(10,30,46,.40) 100%),
    linear-gradient(180deg, rgba(10,30,46,.70) 0%, rgba(10,30,46,.30) 45%, rgba(10,30,46,.92) 100%);
}
.hero--photo .hero__bg::after{opacity:.26}
.hero__bar{position:absolute; left:0; right:0; top:0; height:4px; z-index:2;
  background:linear-gradient(90deg,var(--brand-2) 0%,var(--brand-2) 43%,var(--t2) 43%,var(--t2) 100%)}
.hero__inner{position:relative; z-index:1; padding:clamp(58px,7vw,104px) 0 clamp(48px,6vw,86px)}
.hero__eyebrow{
  display:inline-flex; align-items:center; gap:9px; padding:7px 15px 7px 11px; margin-bottom:22px;
  background:rgba(0,173,238,.12); border:1px solid rgba(0,173,238,.32); border-radius:999px;
  color:#8FDCFF; font-size:12.5px; font-weight:700; letter-spacing:.1em;
}
.hero__eyebrow i{width:7px; height:7px; border-radius:50%; background:var(--brand-2); box-shadow:0 0 0 4px rgba(0,173,238,.2); animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(0,173,238,.20)}50%{box-shadow:0 0 0 8px rgba(0,173,238,.04)}}
.hero h1{font-size:clamp(30px,4.4vw,52px); font-weight:800; color:#fff; margin:0 0 20px; letter-spacing:-.02em; line-height:1.22}
.hero h1 .hl{color:var(--brand-2)}
.hero h1 .hl-2{color:#6FE3D6}
.hero__sub{font-size:clamp(15.5px,1.7vw,18px); line-height:1.82; color:#B6CADB; max-width:720px; margin:0 0 32px}
.hero__sub b{color:#fff; font-weight:600}
.hero--page{padding-bottom:0}
.hero--page .hero h1{font-size:clamp(27px,3.4vw,40px)}
.hero--light{background:var(--surface); color:var(--text)}
.hero--light .hero__bg::before{background:radial-gradient(700px 320px at 8% 0%, rgba(0,173,238,.13), transparent 65%), linear-gradient(180deg,#F5F9FC,#ECF3F9)}
.hero--light .hero__bg::after{opacity:.6; background-image:linear-gradient(rgba(10,30,46,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(10,30,46,.05) 1px,transparent 1px)}
.hero--light h1{color:var(--navy)}
.hero--light h1 .hl{color:var(--brand)}
.hero--light .hero__sub{color:var(--text-2)}
.hero--light .hero__sub b{color:var(--navy)}
.hero--light .hero__eyebrow{background:#fff; border-color:var(--line-2); color:var(--brand)}

/* 关键指标条 */
.stats{display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:rgba(255,255,255,.12); border:1px solid rgba(255,255,255,.12); border-radius:var(--r); overflow:hidden; margin-top:44px}
@media(min-width:760px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{background:rgba(10,30,46,.55); padding:20px 22px; -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px)}
.stat__num{font-size:clamp(24px,2.6vw,32px); font-weight:800; color:#fff; line-height:1; letter-spacing:-.02em; margin:0}
.stat__num b{font-weight:800; color:#fff}
.stat__num i{font-style:normal; font-size:15px; color:var(--brand-2); margin-left:4px; font-weight:700}
.stat__label{display:block; font-size:13px; color:#93AEC2; margin-top:8px; line-height:1.5}

/* ---------- 7. 卡片 ---------- */
.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--r);
  padding:26px 24px; box-shadow:var(--sh-1);
  transition:transform var(--tr), box-shadow var(--tr), border-color var(--tr);
  position:relative; overflow:hidden;
}
.card:hover{transform:translateY(-4px); box-shadow:var(--sh-2); border-color:var(--line-2)}
.card__no{font-size:12px; font-weight:800; letter-spacing:.14em; color:var(--brand); margin-bottom:12px; display:block}
.card h3{font-size:18px; margin:0 0 10px}
.card p{margin:0; font-size:14.5px; color:var(--text); line-height:1.75}
.card--soft{background:var(--surface); border-color:transparent}
.card--soft:hover{border-color:var(--line-2)}
.card--pad-sm{padding:22px 20px}
.card--accent{background:linear-gradient(160deg,#0E2B42,#0A1E2E); border-color:transparent; color:#B6CADB}
.card--accent h3{color:#fff}
.card--accent p{color:#A8BFD1}
.card--accent .card__no{color:var(--brand-2)}
.card__ico{
  width:42px; height:42px; border-radius:11px; display:grid; place-items:center; margin-bottom:16px;
  background:var(--brand-soft); color:var(--brand); flex:none;
}
.card__ico svg{width:21px; height:21px; stroke:currentColor; fill:none; stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round}
.card--accent .card__ico{background:rgba(0,173,238,.14); color:var(--brand-2)}
.split{display:grid; gap:14px; grid-template-columns:auto 1fr; align-items:start}

/* ---------- 8. 档位卡（四档） ---------- */
.tier{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg);
  padding:0 0 26px; box-shadow:var(--sh-1); overflow:hidden; display:flex; flex-direction:column;
  transition:transform var(--tr), box-shadow var(--tr);
}
.tier:hover{transform:translateY(-5px); box-shadow:var(--sh-3)}
.tier__head{padding:22px 24px 18px; border-bottom:1px solid var(--line); position:relative}
.tier__head::before{content:""; position:absolute; left:0; right:0; top:0; height:4px; background:var(--tc,var(--t1))}
.tier__row{display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:12px}
.tier__no{font-size:12px; font-weight:800; letter-spacing:.16em; color:var(--tc,var(--t1))}
.tier__badge{
  font-size:11.5px; font-weight:700; letter-spacing:.06em; padding:3px 10px; border-radius:999px;
  background:var(--tc-soft); color:var(--tc,var(--t1));
  border:1px solid var(--tc-line);
}
.tier__name{font-size:19px; margin:0 0 4px}
.tier__tech{font-size:13.5px; color:var(--text-2); font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.tier__body{padding:20px 24px 0; flex:1}
.tier__spec{margin:0 0 16px; font-size:14px; display:grid; gap:10px}
.tier__spec dt{font-size:12px; font-weight:800; letter-spacing:.1em; color:var(--text-2); margin-bottom:3px}
.tier__spec dd{margin:0; color:var(--text); line-height:1.7}
.tier--1{--tc:var(--t1); --tc-soft:#E6F2F8; --tc-line:#B9D8E8}
.tier--2{--tc:var(--t2); --tc-soft:#E4F5F6; --tc-line:#B4DFE2}
.tier--3{--tc:var(--t3); --tc-soft:#EEECFA; --tc-line:#CFC9EF}
.tier--4{--tc:var(--t4); --tc-soft:#FDF1E3; --tc-line:#F0D3AC}
.tier__foot{padding:0 24px}
.tier__tag{
  display:inline-flex; align-items:center; gap:6px; font-size:12.5px; font-weight:700;
  color:var(--tc,var(--t1)); background:var(--tc-soft);
  border:1px dashed var(--tc-line);
  padding:6px 12px; border-radius:var(--r-xs);
}

/* 分工说明条 */
.callout{
  display:grid; gap:12px; grid-template-columns:auto 1fr; align-items:start;
  margin-top:26px; padding:20px 22px; border-radius:var(--r);
  background:var(--brand-soft); border-left:4px solid var(--brand-2);
  font-size:14.5px; color:#2C4A5F; line-height:1.75;
}
.callout--dark{background:rgba(255,255,255,.05); border-left-color:var(--brand-2); color:#B6CADB}
.callout b{color:var(--navy)}
.callout--dark b{color:#fff}
.callout__ico{width:22px; height:22px; color:var(--brand); margin-top:2px}
.callout__ico svg{width:22px; height:22px; stroke:currentColor; fill:none; stroke-width:1.8}

/* ---------- 9. 架构图（双流量入口） ---------- */
.arch{display:grid; gap:22px}
@media(min-width:900px){.arch{grid-template-columns:1fr 1fr; gap:26px}}
.lane{
  border:1px solid var(--line); border-radius:var(--r-lg); padding:22px 20px 24px;
  background:linear-gradient(180deg,#fff,var(--surface)); position:relative;
}
.lane__hd{display:flex; align-items:center; gap:10px; margin-bottom:18px; padding-bottom:14px; border-bottom:1px dashed var(--line-2)}
.lane__dot{width:9px; height:9px; border-radius:50%; background:var(--lane,var(--brand)); flex:none; box-shadow:0 0 0 4px var(--lane-glow,rgba(0,173,238,.15))}
.lane__title{font-size:15px; font-weight:800; color:var(--navy); margin:0}
.lane__meta{margin-left:auto; font-size:12px; color:var(--text-2); letter-spacing:.06em}
.lane--a{--lane:var(--brand-2); --lane-glow:rgba(0,173,238,.16)}
.lane--b{--lane:var(--t2); --lane-glow:rgba(14,154,167,.16)}
.node{
  border:1px solid var(--line-2); background:#fff; border-radius:var(--r-sm);
  padding:14px 16px; box-shadow:var(--sh-1);
}
.node b{display:block; font-size:15px; color:var(--navy); margin-bottom:3px}
.node span{display:block; font-size:13px; color:var(--text-2); line-height:1.6}
.node--soft{background:var(--surface); border-color:var(--line)}
.node--core{background:linear-gradient(140deg,#143A57,#0A1E2E); border-color:transparent}
.node--core b{color:#fff}
.node--core span{color:#A8BFD1}
.node--dash{border-style:dashed; border-color:var(--t2); background:#F7FDFD}
.node--dash b{color:#0B7C86}
.node--rust{border-style:dashed; border-color:var(--t4); background:#FFFBF5}
.node--rust b{color:#A9661B}
.arrow{display:grid; place-items:center; padding:7px 0; color:var(--line-2)}
.arrow svg{width:14px; height:22px; stroke:currentColor; fill:none; stroke-width:2; stroke-linecap:round; stroke-linejoin:round}
.merge{
  margin-top:22px; padding:18px 22px; border-radius:var(--r);
  background:linear-gradient(140deg,#143A57,#0A1E2E); color:#A8BFD1;
  display:grid; gap:12px; grid-template-columns:auto 1fr; align-items:center;
}
.merge b{color:#fff; display:block; font-size:15.5px; margin-bottom:2px}
.merge span{font-size:13px; color:#A8BFD1}
.merge__ico{width:38px; height:38px; border-radius:10px; background:rgba(0,173,238,.16); display:grid; place-items:center; color:var(--brand-2); flex:none}
.merge__ico svg{width:20px; height:20px; stroke:currentColor; fill:none; stroke-width:1.8}

/* ---------- 10. 交互式三问定档 ---------- */
.calc{
  display:grid; gap:24px; grid-template-columns:1fr;
  background:#fff; border:1px solid var(--line); border-radius:var(--r-xl);
  padding:clamp(22px,3vw,36px); box-shadow:var(--sh-2);
}
@media(min-width:960px){.calc{grid-template-columns:1.35fr 1fr; gap:34px; align-items:start}}
.calc__q{padding-bottom:20px; margin-bottom:20px; border-bottom:1px dashed var(--line-2)}
.calc__q:last-of-type{border-bottom:0; margin-bottom:0; padding-bottom:0}
.calc__qt{display:flex; gap:11px; align-items:baseline; font-size:16.5px; font-weight:700; color:var(--navy); margin:0 0 14px}
.calc__qt i{
  flex:none; font-style:normal; width:24px; height:24px; border-radius:50%;
  background:var(--navy); color:#fff; font-size:12.5px; font-weight:700;
  display:grid; place-items:center; transform:translateY(2px);
}
.calc__opts{display:flex; flex-wrap:wrap; gap:10px}
.opt{
  flex:1 1 210px; text-align:left; cursor:pointer; font-family:inherit;
  background:var(--surface); border:1.5px solid var(--line); border-radius:var(--r-sm);
  padding:13px 16px; font-size:14px; color:var(--text); line-height:1.55;
  transition:all var(--tr); position:relative;
}
.opt:hover{border-color:var(--brand-2); background:#fff}
.opt b{display:block; color:var(--navy); font-size:14.5px; margin-bottom:2px}
.opt.is-on{background:var(--brand-soft); border-color:var(--brand-2); box-shadow:0 0 0 3px rgba(0,173,238,.13)}
.opt.is-on::after{
  content:"✓"; position:absolute; right:12px; top:11px; width:19px; height:19px; border-radius:50%;
  background:var(--brand-2); color:#fff; font-size:12px; font-weight:700; display:grid; place-items:center;
}
.calc__result{
  background:linear-gradient(160deg,#0E2B42,#0A1E2E); border-radius:var(--r-lg);
  padding:26px 24px; color:#A8BFD1; position:sticky; top:92px;
}
.calc__rlabel{font-size:12px; font-weight:800; letter-spacing:.18em; color:var(--brand-2); margin:0 0 10px}
.calc__rtier{font-size:clamp(22px,2.4vw,27px); font-weight:800; color:#fff; margin:0 0 6px; line-height:1.25}
.calc__rtech{font-size:13px; color:#8FDCFF; font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; margin:0 0 16px; word-break:break-word}
.calc__rdesc{font-size:14px; line-height:1.8; margin:0 0 18px; padding-top:16px; border-top:1px solid rgba(255,255,255,.12)}
.calc__rdesc b{color:#fff}
.calc__pills{display:flex; flex-wrap:wrap; gap:8px; margin-bottom:20px; min-height:0}
.pill{
  font-size:12px; font-weight:700; padding:5px 11px; border-radius:999px;
  background:rgba(255,255,255,.09); border:1px solid rgba(255,255,255,.16); color:#DCE8F1;
}
.pill--brand{background:rgba(0,173,238,.18); border-color:rgba(0,173,238,.4); color:#8FDCFF}
.pill--amber{background:rgba(217,131,36,.18); border-color:rgba(217,131,36,.42); color:#F0BF84}

/* ---------- 11. 步骤 / 流程 ---------- */
.flow{display:grid; gap:0; counter-reset:step}
@media(min-width:860px){.flow--2{grid-template-columns:1fr 1fr; column-gap:40px}}
.flow__item{
  display:grid; grid-template-columns:44px 1fr; gap:16px; padding-bottom:26px; position:relative;
}
.flow__item:not(:last-child)::before{
  content:""; position:absolute; left:21px; top:46px; bottom:0; width:2px;
  background:linear-gradient(180deg,var(--line-2),var(--line));
}
.flow__no{
  width:44px; height:44px; border-radius:12px; display:grid; place-items:center;
  background:#fff; border:1.5px solid var(--line-2); color:var(--brand);
  font-weight:800; font-size:15px; position:relative; z-index:1; flex:none;
}
.flow__item:hover .flow__no{background:var(--brand); border-color:var(--brand); color:#fff; transition:all var(--tr)}
.flow--2 .flow__item::before{display:none}
.flow--2 .flow__item{padding-bottom:30px}
.flow--2 .flow__no{background:var(--surface); border-style:dashed}
.flow__hd{display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin-bottom:5px}
.flow__hd b{font-size:16.5px; color:var(--navy)}
.flow__badge{font-size:11px; font-weight:700; padding:3px 9px; border-radius:999px; background:var(--brand-soft); color:var(--brand); border:1px solid rgba(0,173,238,.3)}
.flow__item p{margin:0; font-size:14.5px; color:var(--text); line-height:1.75}

/* ---------- 12. 痛点 → 解决 ---------- */
.pain{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg); padding:26px 24px;
  box-shadow:var(--sh-1); display:flex; flex-direction:column; gap:14px;
  transition:transform var(--tr), box-shadow var(--tr);
}
.pain:hover{transform:translateY(-4px); box-shadow:var(--sh-2)}
.pain__hd{display:flex; align-items:center; gap:13px}
.pain__no{
  flex:none; width:38px; height:38px; border-radius:11px; background:var(--navy); color:#fff;
  font-weight:800; font-size:15px; display:grid; place-items:center;
}
.pain__hd b{font-size:16.5px; color:var(--navy); line-height:1.4}
.pain p{margin:0; font-size:14.5px; color:var(--text); line-height:1.8}
.pain__solve{
  margin-top:auto; padding-top:14px; border-top:1px dashed var(--line-2);
  display:grid; grid-template-columns:auto 1fr; gap:10px; align-items:start;
  font-size:14px; color:#2C4A5F;
}
.pain__solve svg{width:17px; height:17px; color:var(--t2); margin-top:4px; stroke:currentColor; fill:none; stroke-width:2.2; stroke-linecap:round; stroke-linejoin:round}

/* ---------- 13. 行业方案 ---------- */
.filter{
  display:flex; flex-wrap:wrap; gap:12px; align-items:center;
  margin-bottom:26px; padding-bottom:22px; border-bottom:1px solid var(--line);
}
.filter__btns{display:flex; flex-wrap:wrap; gap:9px}
.filter__btns button{
  font-family:inherit; cursor:pointer; font-size:14px; color:var(--text);
  background:#fff; border:1.5px solid var(--line-2); border-radius:999px; padding:9px 18px;
  transition:all var(--tr);
}
.filter__btns button:hover{border-color:var(--brand-2); color:var(--brand)}
.filter__btns button.is-on{background:var(--navy); border-color:var(--navy); color:#fff; font-weight:700}
.filter__search{margin-left:auto; position:relative; flex:1 1 240px; max-width:300px}
.filter__search input{
  width:100%; font-family:inherit; font-size:14.5px; color:var(--navy);
  padding:11px 15px 11px 40px; border:1.5px solid var(--line-2); border-radius:var(--r-sm);
  background:#fff; transition:border-color var(--tr), box-shadow var(--tr);
}
.filter__search input:focus{outline:0; border-color:var(--brand-2); box-shadow:0 0 0 3px rgba(0,173,238,.14)}
.filter__search svg{position:absolute; left:13px; top:50%; transform:translateY(-50%); width:16px; height:16px; stroke:var(--text-2); fill:none; stroke-width:2}
.filter__count{font-size:13.5px; color:var(--text-2); width:100%}
.filter__count b{color:var(--brand)}

.ind{
  border:1px solid var(--line); border-radius:var(--r); background:#fff;
  margin-bottom:12px; overflow:hidden; transition:border-color var(--tr), box-shadow var(--tr);
}
.ind[open]{border-color:var(--line-2); box-shadow:var(--sh-2)}
.ind:hover{border-color:var(--line-2)}
.ind > summary{
  cursor:pointer; list-style:none; padding:16px 20px;
  display:flex; align-items:center; gap:14px; flex-wrap:wrap;
}
.ind > summary::-webkit-details-marker{display:none}
.ind > summary:hover{background:var(--surface)}
.ind__mono{
  flex:none; width:40px; height:40px; border-radius:11px; display:grid; place-items:center;
  background:var(--ic-soft); color:var(--ic,var(--t1));
  border:1px solid var(--ic-line);
  font-weight:800; font-size:16px;
}
.ind__name{font-size:16.5px; font-weight:700; color:var(--navy)}
.ind__tier{font-size:11.5px; font-weight:700; letter-spacing:.05em; padding:3px 10px; border-radius:999px;
  background:var(--ic-soft); color:var(--ic,var(--t1));
  border:1px solid var(--ic-line)}
.ind__more{margin-left:auto; font-size:13px; color:var(--brand); white-space:nowrap; display:inline-flex; align-items:center; gap:6px}
.ind__more svg{width:13px; height:13px; stroke:currentColor; fill:none; stroke-width:2.4; transition:transform var(--tr)}
.ind[open] .ind__more svg{transform:rotate(180deg)}
.ind__body{padding:0 20px 22px; border-top:1px dashed var(--line-2)}
.ind__body .lead{color:var(--text); font-size:14.5px; margin:16px 0 18px; line-height:1.8}
.ind__body h4{margin:0 0 10px; font-size:12.5px; font-weight:800; letter-spacing:.14em; color:var(--brand); text-transform:uppercase}
.ind__body ul{margin:0 0 16px; padding:0; list-style:none; display:grid; gap:9px}
.ind__body li{position:relative; padding-left:22px; font-size:14px; color:var(--text); line-height:1.7}
.ind__body li::before{content:""; position:absolute; left:4px; top:10px; width:6px; height:6px; border-radius:50%; background:var(--ic,var(--brand)); opacity:.65}
.tags{display:flex; flex-wrap:wrap; gap:7px}
.tag{font-size:12.5px; color:#3D5768; background:var(--surface); border:1px solid var(--line); padding:3px 11px; border-radius:999px}

/* ---------- 13.1 技术组成条 ---------- */
.techbar{
  display:flex; flex-wrap:wrap; gap:10px; align-items:center; justify-content:center;
  padding:22px 24px; background:#fff; border:1px solid var(--line); border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
}
.techbar__lb{font-size:12px; font-weight:800; letter-spacing:.16em; color:var(--text-2); text-transform:uppercase; margin-right:4px}
.chip{
  display:inline-flex; align-items:center; gap:8px; font-size:13.5px; color:var(--navy); font-weight:500;
  background:#fff; border:1px solid var(--line); border-radius:999px; padding:7px 15px;
  transition:transform var(--tr), border-color var(--tr), box-shadow var(--tr), color var(--tr);
}
.chip:hover{border-color:var(--brand-2); color:var(--brand); transform:translateY(-2px); box-shadow:var(--sh-1)}
.chip i{width:6px; height:6px; border-radius:50%; background:var(--cc,var(--brand)); flex:none}
.chip--1{--cc:var(--t1)} .chip--2{--cc:var(--t2)} .chip--3{--cc:var(--t3)} .chip--4{--cc:var(--t4)}
.chips{display:flex; flex-wrap:wrap; gap:9px}
.techbar .chip{background:var(--surface)}
.techbar .chip:hover{background:#fff}
.ind[data-tier="t1"]{--ic:var(--t1); --ic-soft:#E6F2F8; --ic-line:#B9D8E8}
.ind[data-tier="t2"]{--ic:var(--t2); --ic-soft:#E4F5F6; --ic-line:#B4DFE2}
.ind[data-tier="t3"]{--ic:var(--t3); --ic-soft:#EEECFA; --ic-line:#CFC9EF}
.ind--hide{display:none}
.empty{padding:40px 20px; text-align:center; color:var(--text-2); font-size:14.5px; border:1px dashed var(--line-2); border-radius:var(--r); display:none}
.empty.is-show{display:block}

/* ---------- 14. 价格结构 ---------- */
.fee-grid{display:grid; gap:18px}
@media(min-width:700px){.fee-grid{grid-template-columns:1fr 1fr}}
.fee{
  background:#fff; border:1px solid var(--line); border-radius:var(--r); padding:24px;
  box-shadow:var(--sh-1); position:relative; overflow:hidden;
  transition:transform var(--tr), box-shadow var(--tr);
}
.fee:hover{transform:translateY(-4px); box-shadow:var(--sh-2)}
.fee::before{content:""; position:absolute; left:0; top:0; bottom:0; width:4px; background:var(--fc,var(--t1))}
.fee--1{--fc:var(--t1); --fc-soft:#E6F2F8; --fc-line:#B9D8E8}
.fee--2{--fc:var(--t4); --fc-soft:#FDF1E3; --fc-line:#F0D3AC}
.fee--3{--fc:var(--t3); --fc-soft:#EEECFA; --fc-line:#CFC9EF}
.fee--4{--fc:var(--t2); --fc-soft:#E4F5F6; --fc-line:#B4DFE2}
.fee__hd{display:flex; align-items:center; gap:10px; margin-bottom:10px}
.fee__hd h3{font-size:17.5px; margin:0}
.fee__mode{font-size:12.5px; font-weight:700; color:var(--fc,var(--t1)); letter-spacing:.05em;
  background:var(--fc-soft); border:1px solid var(--fc-line);
  padding:2px 9px; border-radius:999px; margin-left:auto}
.fee p{margin:0; font-size:14.5px; line-height:1.8}

/* ---------- 15. FAQ ---------- */
.faq{border:1px solid var(--line); border-radius:var(--r); background:#fff; overflow:hidden}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item:last-child{border-bottom:0}
.faq__item summary{
  cursor:pointer; list-style:none; padding:19px 54px 19px 22px; position:relative;
  font-size:15.5px; font-weight:700; color:var(--navy); transition:background var(--tr);
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary:hover{background:var(--surface)}
.faq__item summary::after{
  content:""; position:absolute; right:22px; top:50%; width:11px; height:11px;
  border-right:2px solid var(--brand); border-bottom:2px solid var(--brand);
  transform:translateY(-70%) rotate(45deg); transition:transform var(--tr);
}
.faq__item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq__item[open] summary{color:var(--brand)}
.faq__a{padding:0 22px 20px; font-size:14.5px; color:var(--text); line-height:1.85}
.faq__a p:last-child{margin-bottom:0}

/* ---------- 16. 行业 / 部署 选择卡 ---------- */
.opt-card{
  display:grid; gap:14px; padding:26px 24px; border-radius:var(--r-lg);
  border:1px solid var(--line); background:#fff; box-shadow:var(--sh-1);
  transition:transform var(--tr), box-shadow var(--tr), border-color var(--tr);
}
.opt-card:hover{transform:translateY(-4px); box-shadow:var(--sh-2); border-color:var(--line-2)}
.opt-card--dark{background:linear-gradient(160deg,#143A57,#0A1E2E); border-color:transparent; color:#A8BFD1}
.opt-card--dark h3{color:#fff}
.opt-card h3{font-size:18px; margin:0}
.opt-card p{margin:0; font-size:14.5px; line-height:1.8}
.opt-card__ico{width:44px; height:44px; border-radius:12px; display:grid; place-items:center; background:var(--brand-soft); color:var(--brand)}
.opt-card--dark .opt-card__ico{background:rgba(0,173,238,.15); color:var(--brand-2)}
.opt-card__ico svg{width:22px; height:22px; stroke:currentColor; fill:none; stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round}
.opt-card__meta{display:flex; flex-wrap:wrap; gap:8px; margin-top:2px}

/* ---------- 17. 联系 ---------- */
.contact-grid{display:grid; gap:22px}
@media(min-width:820px){.contact-grid{grid-template-columns:1fr 1fr}}
.contact-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg);
  padding:32px 28px; text-align:center; box-shadow:var(--sh-1);
  display:flex; flex-direction:column; justify-content:center;
}
.contact-card--dark{background:linear-gradient(160deg,#143A57,#0A1E2E); border-color:transparent}
.contact-card--dark .contact-card__cap{color:#9FB6C7}
.contact-card--dark .contact-card__sub{color:#A8BFD1}
.contact-card .phone-big{font-size:clamp(26px,3.4vw,34px); font-weight:800; letter-spacing:.01em; line-height:1.2}
.contact-card .phone-big a{color:var(--navy)}
.contact-card .phone-big a:hover{color:var(--brand)}
.contact-card--dark .phone-big a{color:#fff}
.contact-card--dark .phone-big a:hover{color:var(--brand-2)}
.contact-card__sub{font-size:14.5px; color:var(--text-2); margin:12px 0 0}
.contact-card__cap{font-size:13.5px; color:var(--text-2); margin:14px 0 0}
.contact-card img.qr{width:190px; margin:0 auto 18px; border-radius:var(--r-sm); border:6px solid #fff; box-shadow:var(--sh-2)}
.contact-list{display:grid; gap:14px; margin-top:24px; text-align:left}
.contact-list > div{display:grid; grid-template-columns:auto 1fr; gap:11px; align-items:start; font-size:14.5px; color:var(--text-2)}
.contact-list svg{width:17px; height:17px; stroke:var(--brand); fill:none; stroke-width:1.9; margin-top:4px}
.contact-list b{color:var(--navy); font-weight:700}
.contact-card--dark .contact-list > div{color:#A8BFD1}
.contact-card--dark .contact-list svg{stroke:var(--brand-2)}
.contact-card--dark .contact-list b{color:#fff}

/* ---------- 18. CTA ---------- */
.cta{
  position:relative; overflow:hidden; border-radius:var(--r-xl);
  background:linear-gradient(135deg,#0E2B42 0%,#123A57 55%,#0C5F6B 130%);
  padding:clamp(34px,5vw,60px) clamp(24px,4vw,56px); text-align:center; color:#fff;
}
.cta::before{
  content:""; position:absolute; inset:0; opacity:.45;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(circle at 50% 100%,#000,transparent 78%);
  mask-image:radial-gradient(circle at 50% 100%,#000,transparent 78%);
}
.cta > *{position:relative; z-index:1}
.cta h2{color:#fff; font-size:clamp(22px,2.9vw,32px); margin:0 0 12px}
.cta p{color:#B6CADB; margin:0 0 26px; font-size:15.5px}
.cta__note{font-size:13px; color:#8FA9BD; margin:22px 0 0}

/* ---------- 19. 页脚 ---------- */
.ft{background:var(--ink); color:#93AEC2; padding:clamp(44px,5vw,64px) 0 0; margin-top:clamp(60px,7vw,96px)}
.ft__grid{display:grid; gap:34px; padding-bottom:40px}
@media(min-width:700px){.ft__grid{grid-template-columns:1.6fr 1fr}}
@media(min-width:1000px){.ft__grid{grid-template-columns:1.7fr 1fr 1fr 1.2fr}}
.ft__brand{display:flex; align-items:center; gap:11px; color:#fff; margin-bottom:16px}
.ft__brand img{height:38px}
.ft__brand b{font-size:16px; letter-spacing:.05em}
.ft__desc{font-size:14px; line-height:1.85; color:#93AEC2; margin:0 0 18px; max-width:340px}
.ft__col h4{font-size:12.5px; font-weight:800; letter-spacing:.16em; color:#fff; margin:0 0 16px; text-transform:uppercase}
.ft__col ul{list-style:none; margin:0; padding:0; display:grid; gap:10px}
.ft__col a{color:#93AEC2; font-size:14px}
.ft__col a:hover{color:var(--brand-2)}
.ft__col li{font-size:14px}
.ft__phone{display:inline-flex; align-items:center; gap:8px; color:#fff; font-size:18px; font-weight:800; letter-spacing:.02em}
.ft__phone:hover{color:var(--brand-2)}
.ft__phone svg{width:16px; height:16px; fill:var(--brand-2)}
.ft__tags{display:flex; flex-wrap:wrap; gap:7px; margin-top:16px}
.ft__tag{font-size:11.5px; padding:3px 10px; border-radius:999px; background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.12); color:#A8BFD1}
.ft__meta{
  border-top:1px solid rgba(255,255,255,.1); padding:20px 0 26px;
  display:flex; flex-wrap:wrap; gap:8px 24px; align-items:center;
  font-size:12.5px; color:#7D96AA;
}
.ft__meta a{color:#7D96AA}
.ft__meta a:hover{color:var(--brand-2)}
.ft__meta .sp{margin-left:auto}
.ft__meta i{font-style:normal; color:#5E7A90}

/* ---------- 20. 回到顶部 ---------- */
.to-top{
  position:fixed; right:20px; bottom:22px; width:46px; height:46px; border-radius:50%;
  background:var(--navy); color:#fff; border:1px solid rgba(255,255,255,.14);
  font-size:18px; cursor:pointer; display:grid; place-items:center;
  box-shadow:0 10px 26px -8px rgba(10,30,46,.6); z-index:90;
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:all var(--tr);
}
.to-top.is-show{opacity:1; visibility:visible; transform:translateY(0)}
.to-top:hover{background:var(--brand); border-color:var(--brand)}

/* ---------- 21. 滚动揭示 ---------- */
.reveal{opacity:0; transform:translateY(18px); transition:opacity .6s cubic-bezier(.16,1,.3,1), transform .6s cubic-bezier(.16,1,.3,1)}
.reveal.is-in{opacity:1; transform:none}

/* ---------- 21.1 子导航（产品页锚点索引） ---------- */
.subnav{
  position:sticky; top:68px; z-index:60;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:saturate(180%) blur(14px); backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.subnav__inner{display:flex; gap:6px; overflow-x:auto; padding:10px 0; scrollbar-width:none}
.subnav__inner::-webkit-scrollbar{display:none}
.subnav a{
  font-size:14px; color:var(--text); padding:8px 15px; border-radius:999px;
  white-space:nowrap; border:1px solid var(--line); background:#fff; font-weight:500;
}
.subnav a:hover{background:var(--surface); color:var(--brand); border-color:var(--line-2)}
.subnav a.is-active{background:var(--navy); color:#fff; border-color:var(--navy); font-weight:700}

/* ---------- 21.2 特性清单 ---------- */
.feat-grid{display:grid; gap:0 40px}
@media(min-width:780px){.feat-grid{grid-template-columns:1fr 1fr}}
.feat{display:grid; gap:14px; grid-template-columns:auto 1fr; align-items:start; padding:20px 0; border-bottom:1px dashed var(--line-2)}
.feat:last-child{border-bottom:0}
.feat__ico{width:38px; height:38px; border-radius:11px; background:var(--brand-soft); color:var(--brand); display:grid; place-items:center; flex:none}
.feat__ico svg{width:19px; height:19px; stroke:currentColor; fill:none; stroke-width:1.9; stroke-linecap:round; stroke-linejoin:round}
.feat b{display:block; font-size:15.5px; color:var(--navy); margin-bottom:3px}
.feat span{font-size:14px; color:var(--text); line-height:1.72}
.feat--amber .feat__ico{background:#FDF1E3; color:var(--t4)}
.feat--teal .feat__ico{background:#E4F5F6; color:var(--t2)}
.feat--violet .feat__ico{background:#EEECFA; color:var(--t3)}

/* ---------- 21.3 表格 ---------- */
.table-scroll{overflow-x:auto; -webkit-overflow-scrolling:touch; border:1px solid var(--line); border-radius:var(--r); background:#fff}
table.t{width:100%; border-collapse:collapse; min-width:680px; font-size:14px}
table.t th{background:var(--navy); color:#fff; text-align:left; padding:13px 16px; font-weight:700; white-space:nowrap; font-size:13.5px; letter-spacing:.02em}
table.t td{padding:13px 16px; border-bottom:1px solid var(--line); vertical-align:top; color:var(--text); line-height:1.72}
table.t tbody tr:last-child td{border-bottom:0}
table.t tbody tr:nth-child(even) td{background:var(--surface)}
table.t td b{color:var(--navy)}
table.t td .tag{margin:2px 4px 2px 0}

/* ---------- 21.4 组件标注块 ---------- */
.block{
  display:grid; gap:16px; padding:24px; border-radius:var(--r-lg);
  border:1px solid var(--line); background:#fff; box-shadow:var(--sh-1);
}
.block--soft{background:var(--surface); box-shadow:none}
.block__hd{display:flex; align-items:center; gap:12px; flex-wrap:wrap}
.block__no{
  font-size:12px; font-weight:800; letter-spacing:.14em; padding:4px 11px; border-radius:999px;
  background:var(--navy); color:#fff;
}
.block h3{margin:0; font-size:17.5px}
.block p{margin:0; font-size:14.5px; line-height:1.8}
.dl{display:grid; gap:12px; margin:0; font-size:14.5px}
@media(min-width:700px){.dl--2{grid-template-columns:1fr 1fr; gap:12px 30px}}
.dl > div{display:grid; grid-template-columns:auto 1fr; gap:10px; align-items:start}
.dl dt{font-weight:800; color:var(--navy); font-size:13.5px; white-space:nowrap; padding-top:2px}
.dl dd{margin:0; color:var(--text); line-height:1.75}
.dl dt::after{content:"："}

/* ---------- 21.5 指标/承诺行 ---------- */
.kpis{display:grid; gap:18px}
@media(min-width:700px){.kpis{grid-template-columns:repeat(3,1fr)}}
.kpi{padding:22px 22px; border-radius:var(--r); background:var(--surface); border:1px solid var(--line)}
.kpi b{display:block; font-size:15.5px; color:var(--navy); margin-bottom:6px}
.kpi span{font-size:14px; color:var(--text); line-height:1.7}

/* ---------- 21.6 配图 ---------- */
.figure{
  margin:0; position:relative; border-radius:var(--r-lg); overflow:hidden;
  background:var(--surface-2); border:1px solid var(--line); box-shadow:var(--sh-2);
}
.figure picture{display:block; width:100%}
.figure img{display:block; width:100%; height:auto; max-height:580px; object-fit:cover; object-position:center 42%}
.figure__tag{
  position:absolute; left:14px; top:14px; z-index:2;
  font-size:11.5px; font-weight:800; letter-spacing:.12em; padding:5px 12px; border-radius:999px;
  background:rgba(8,24,37,.72); color:var(--brand-2); border:1px solid rgba(0,173,238,.38);
  -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
}
.figure__cap{
  position:absolute; left:0; right:0; bottom:0; z-index:2; margin:0;
  padding:34px 20px 16px; font-size:13px; color:#D3E2EC; line-height:1.65;
  background:linear-gradient(to top, rgba(8,24,37,.94) 12%, rgba(8,24,37,0) 100%);
}
.figure__cap b{color:#fff; font-weight:700}
.figure--grid{margin-bottom:22px}

/* 图文两栏 */
.media{display:grid; gap:28px; align-items:center}
@media(min-width:900px){
  .media{grid-template-columns:1.04fr 1fr; gap:46px}
  .media--rev .media__fig{order:2}
}
.media__fig{
  margin:0; position:relative; border-radius:var(--r-lg); overflow:hidden;
  box-shadow:var(--sh-3); background:var(--surface-2);
}
.media__fig picture,.media__fig img{display:block; width:100%}
.media__fig img{height:auto}
.media__fig::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(210deg, rgba(0,173,238,.16), rgba(0,173,238,0) 58%);
}
.media__body h3{font-size:clamp(20px,2.4vw,27px); margin:0 0 14px}
.media__body > p{font-size:15px; line-height:1.85; color:var(--text)}
.media__list{list-style:none; margin:18px 0 0; padding:0; display:grid; gap:11px}
.media__list li{position:relative; padding-left:24px; font-size:14.5px; color:var(--text); line-height:1.72}
.media__list li::before{content:""; position:absolute; left:4px; top:9px; width:7px; height:7px; border-radius:50%; background:var(--brand-2)}
.media__list li b{color:var(--navy)}

/* 大图横幅 */
.band{position:relative; overflow:hidden; border-radius:var(--r-xl); min-height:270px; display:flex; align-items:flex-end}
.band__img{position:absolute; inset:0; z-index:0}
.band__img picture,.band__img img{display:block; width:100%; height:100%}
.band__img img{object-fit:cover; object-position:center}
.band::after{
  content:""; position:absolute; inset:0; z-index:1;
  background:linear-gradient(90deg, rgba(10,30,46,.95) 0%, rgba(10,30,46,.80) 42%, rgba(10,30,46,.34) 100%);
}
.band__body{position:relative; z-index:2; padding:clamp(26px,3.8vw,48px); max-width:680px}
.band__body h3{color:#fff; font-size:clamp(20px,2.5vw,29px); margin:0 0 12px}
.band__body p{margin:0; color:#B6CADB; font-size:15px; line-height:1.85}
.band__body .band__chips{display:flex; flex-wrap:wrap; gap:8px; margin-top:18px}
.band .chip{background:rgba(255,255,255,.09); border-color:rgba(255,255,255,.22); color:#DCE8F1}
.band .chip:hover{background:rgba(255,255,255,.16); color:#fff; border-color:rgba(255,255,255,.4)}

/* ---------- 22. 响应式 ---------- */
@media(max-width:1080px){
  .hd__phone{display:none}
}
@media(max-width:980px){
  .nav-toggle{display:block}
  .nav{
    position:absolute; left:0; right:0; top:100%; margin:0;
    flex-direction:column; align-items:stretch; gap:0;
    background:#081825; border-bottom:1px solid rgba(255,255,255,.1);
    padding:8px 20px 24px; display:none;
    max-height:calc(100vh - 68px); overflow-y:auto;
    box-shadow:0 24px 40px -20px rgba(0,0,0,.7);
  }
  .nav.is-open{display:flex}
  .nav a{padding:15px 6px; font-size:16px; border-bottom:1px solid rgba(255,255,255,.07); border-radius:0}
  .nav a:hover{background:transparent}
  .nav a.is-active::after{display:none}
  .nav a.is-active{color:var(--brand-2)}
  .hd__cta{display:none}
  .hd__inner{position:relative}
  .nav__cta{display:block; margin-top:18px}
  .nav__cta .btn{width:100%}
  .nav__cta small{display:block; text-align:center; color:#7FA3BC; font-size:12.5px; margin-top:10px}
}
@media(max-width:700px){
  .sec{padding:52px 0}
  .hero__inner{padding:48px 0 44px}
  .hero h1{font-size:27px; line-height:1.3}
  .hero--page .hero h1{font-size:25px}
  .hero__sub{font-size:15.5px}
  .hero__pic img{opacity:.45; object-position:72% 50%}
  .hero--photo .hero__bg::before{
    background:
      radial-gradient(600px 300px at 78% 6%, rgba(0,173,238,.26), transparent 62%),
      linear-gradient(180deg, rgba(10,30,46,.94) 0%, rgba(10,30,46,.86) 58%, rgba(10,30,46,.96) 100%);
  }
  .hero--photo .hero__bg::after{opacity:.4}
  .figure__tag{left:12px; top:12px; font-size:11px}
  .figure__cap{padding:30px 16px 14px; font-size:12.5px}
  .band{min-height:330px}
  .band::after{background:linear-gradient(180deg, rgba(10,30,46,.55) 0%, rgba(10,30,46,.90) 58%, rgba(10,30,46,.96) 100%)}
  .band__body{padding:26px 22px}
  .card,.pain,.fee{padding:22px 20px}
  .tier__head,.tier__body,.tier__foot{padding-left:20px; padding-right:20px}
  .calc__result{position:static}
  .filter__search{margin-left:0; max-width:none}
  .btn{width:100%}
  .btn-row .btn{flex:1 1 auto}
  .hd__cta .btn{width:auto}
}

/* ---------- 23. 动效降级 ---------- */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important}
  .reveal{opacity:1; transform:none}
}

/* ---------- 24. 打印 ---------- */
@media print{
  .hd,.to-top,.ft,.cta,.hero__bg{display:none}
  body{color:#000}
  .card,.tier,.pain,.fee{box-shadow:none; border-color:#ccc}
}