/* =========================================================
   OpenPortal — 产品介绍网站
   设计系统：深海军蓝 + 电光青 + 少量暖橙
   ========================================================= */
:root{
  --ink:#0B182A;
  --navy:#050E1A;
  --navy-2:#0A1B2E;
  --blue:#2B6CFF;
  --cyan:#2ED3E0;
  --amber:#F5A64B;
  --paper:#F5F8FC;
  --white:#fff;
  --body:#415166;
  --text:#3E4E63;
  --muted:#768AA2;
  --line:#E0E7F0;
  --line-dark:rgba(255,255,255,.10);
  --radius:16px;
  --wrap:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow:0 18px 50px -28px rgba(11,24,42,.35);
}

*,*::before,*::after{box-sizing:border-box}
body{
  margin:0;
  background:var(--white);
  color:var(--text);
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","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{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.28;letter-spacing:-.01em}
p{margin:0}
::selection{background:rgba(46,211,224,.28)}

.wrap{width:min(var(--wrap),calc(100% - 48px));margin:0 auto}

/* ---------- 通用文字 ---------- */
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-size:12px;font-weight:700;letter-spacing:.16em;
  color:var(--blue);text-transform:uppercase;margin-bottom:18px;
  font-family:"Bahnschrift","DIN Alternate","Segoe UI",sans-serif;
}
.eyebrow i{width:9px;height:9px;border:1px solid currentColor;display:inline-block;position:relative}
.eyebrow i::after{content:"";position:absolute;inset:2px;background:currentColor}
.eyebrow--light{color:var(--cyan)}

.sec-head{max-width:760px;margin-bottom:56px}
.sec-head h2{font-size:clamp(26px,3.2vw,42px)}
.sec-head .lead{margin-top:16px;font-size:clamp(15px,1.2vw,17px);color:var(--muted);line-height:1.85}
.sec-head--light h2{color:#fff}
.sec-head--light .lead{color:rgba(214,230,244,.68)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 26px;border-radius:10px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),background .28s,color .28s,border-color .28s;
}
.btn--primary{background:var(--blue);color:#fff;box-shadow:0 10px 28px -12px rgba(43,108,255,.75)}
.btn--primary:hover{background:#1D5BEE;transform:translateY(-2px);box-shadow:0 16px 34px -14px rgba(43,108,255,.8)}
.btn--ghost{color:#fff;border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.04)}
.btn--ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5);transform:translateY(-2px)}
.btn--line{border-color:rgba(255,255,255,.32);color:#fff;height:40px;padding:0 18px;font-size:13.5px;border-radius:8px;font-weight:600;letter-spacing:.06em}
.btn--lg{height:54px;padding:0 32px;font-size:16px}
.play{width:0;height:0;border-left:9px solid currentColor;border-top:6px solid transparent;border-bottom:6px solid transparent}

/* =========================================================
   导航
   ========================================================= */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:90;
  color:#fff;
  transition:background .35s var(--ease),box-shadow .35s,border-color .35s,color .35s;
  border-bottom:1px solid transparent;
}
.nav__inner{
  width:min(1320px,calc(100% - 48px));margin:0 auto;height:74px;
  display:flex;align-items:center;gap:36px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__mark{
  width:26px;height:26px;border:1.5px solid var(--cyan);
  display:inline-block;position:relative;flex:0 0 auto;
}
.brand__mark::after{content:"";position:absolute;inset:6px;background:var(--cyan)}
.brand__text{display:flex;flex-direction:column;line-height:1.25}
.brand__text b{font-family:"Bahnschrift","DIN Alternate",sans-serif;font-size:15px;letter-spacing:.14em}
.brand__text i{font-style:normal;font-size:11px;opacity:.62;letter-spacing:.08em}

.nav__menu{display:flex;gap:30px;margin-left:auto}
.nav__menu a{
  position:relative;font-size:14px;opacity:.8;
  transition:opacity .25s,color .25s;padding:6px 0;
}
.nav__menu a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--cyan);transition:right .3s var(--ease);
}
.nav__menu a:hover{opacity:1}
.nav__menu a:hover::after,.nav__menu a.is-active::after{right:0}
.nav__menu a.is-active{opacity:1}

/* 导航下拉「相关教程」：桌面端**只认点击**（用户明确要求悬停不展开），
   移动端在抽屉里展开为手风琴；两种形态共用 .is-open 一个状态。
   （按钮与下拉面板都不带 filter/transform 以外的定位属性，.nav 本身仍无 filter） */
.nav__drop{position:relative}
.nav__drop-btn{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  font:inherit;font-size:14px;color:inherit;opacity:.8;
  background:none;border:0;padding:6px 0;cursor:pointer;
  transition:opacity .25s,color .25s;
}
.nav__drop-btn::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--cyan);transition:right .3s var(--ease);
}
.nav__drop-btn:hover{opacity:1}
.nav__drop:hover .nav__drop-btn::after,
.nav__drop.is-open .nav__drop-btn::after{right:0}
/* 悬停只做下划线与不透明度的视觉反馈，不再展开面板 */
.nav__drop.is-open .nav__drop-btn{opacity:1}
.nav__caret{
  width:6px;height:6px;flex:0 0 auto;
  border-right:1.4px solid currentColor;border-bottom:1.4px solid currentColor;
  transform:rotate(45deg) translate(-1px,-1px);transition:transform .25s var(--ease);
}
.nav__drop.is-open .nav__caret{transform:rotate(-135deg) translate(-2px,-2px)}
/* 下拉里有当前页时（.has-active），按钮也给一点颜色 —— 面板默认收起，顶栏仍能看出位置。
   深色首屏用青色（蓝色在深底上易糊），白色吸顶态换成品牌蓝。 */
.nav__drop.has-active .nav__drop-btn{color:var(--cyan);opacity:1}
.nav.is-solid .nav__drop.has-active .nav__drop-btn{color:var(--blue)}
.nav__sub{
  position:absolute;top:calc(100% + 14px);right:0;z-index:5;
  min-width:200px;padding:8px;
  display:flex;flex-direction:column;gap:2px;
  background:#fff;border-radius:12px;
  box-shadow:0 22px 46px -22px rgba(11,24,42,.5),0 2px 8px rgba(11,24,42,.08);
  opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-6px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.nav__drop.is-open .nav__sub{opacity:1;visibility:visible;pointer-events:auto;transform:none}
.nav__sub a{
  padding:9px 12px;border-radius:8px;font-size:13.5px;line-height:1.4;
  color:var(--ink);opacity:1;white-space:nowrap;
  transition:background .2s,color .2s;
}
.nav__sub a::after{display:none}
.nav__sub a:hover{background:rgba(11,24,42,.05);color:var(--blue);opacity:1}
.nav__sub a.is-active{background:rgba(11,24,42,.045);color:var(--blue);font-weight:600}
.nav__right{display:flex;align-items:center;gap:14px}
.nav__menu .nav__cta{display:none}
.nav__toggle{display:none;width:40px;height:36px;background:none;border:0;padding:8px 6px;cursor:pointer}
.nav__toggle span{display:block;height:1.6px;background:currentColor;margin:5px 0;transition:.3s}
.nav__toggle.is-open span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.nav__toggle.is-open span:nth-child(2){opacity:0;transform:scaleX(.4)}
.nav__toggle.is-open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

/* 毛玻璃底衬单独放在伪元素上：
   若直接把 backdrop-filter 写在 .nav 上，.nav 会自动成为子元素（移动端 fixed 定位的
   .nav__menu 抽屉）的 containing block，抽屉的 top:74px / bottom:0 改按 75px 高的导航条
   计算，高度塌缩成几十像素并被 overflow 裁掉 —— 表现为滚动后（.nav.is-solid 生效时）
   点开汉堡菜单「被遮挡」。保持 .nav 本身无 filter，抽屉始终相对视口定位。 */
.nav::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);
  opacity:0;transition:opacity .35s var(--ease);
}
.nav.is-solid{
  background:transparent;
  color:var(--ink);
  box-shadow:0 1px 0 rgba(11,24,42,.08);
  border-color:rgba(11,24,42,.06);
}
.nav.is-solid::before{opacity:1}
.nav.is-solid .btn--line{border-color:rgba(43,108,255,.45);color:var(--blue)}
.nav.is-solid .brand__mark{border-color:var(--blue)}
.nav.is-solid .brand__mark::after{background:var(--blue)}

/* =========================================================
   首屏
   ========================================================= */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  background:var(--navy);color:#fff;overflow:hidden;
  padding:120px 0 90px;
}
.hero__bg{
  position:absolute;inset:-8% -2% -6%;
  background:url("../assets/hero.png") center/cover no-repeat;
  will-change:transform;
}
.hero__veil{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 78% 18%,rgba(43,108,255,.20),transparent 62%),
    linear-gradient(90deg,rgba(4,10,20,.94) 0%,rgba(4,10,20,.80) 42%,rgba(4,10,20,.34) 78%,rgba(4,10,20,.62) 100%),
    linear-gradient(180deg,rgba(4,10,20,.72) 0%,transparent 32%,rgba(4,10,20,.9) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,170,220,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,170,220,.055) 1px,transparent 1px);
  background-size:88px 88px;
  mask-image:radial-gradient(80% 70% at 50% 40%,#000 30%,transparent 100%);
}
.hero__inner{position:relative;z-index:2;width:min(var(--wrap),calc(100% - 48px));margin:0 auto}
.hero__title{
  color:#fff;font-size:clamp(40px,6.4vw,84px);line-height:1.1;letter-spacing:-.02em;
  margin:6px 0 26px;
}
.hero__title em{
  font-style:normal;
  background:linear-gradient(100deg,var(--cyan),#7FB6FF 70%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__lead{font-size:clamp(15px,1.4vw,18.5px);line-height:1.95;color:rgba(214,230,244,.76);max-width:620px}
.hero__actions{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}
.hero__stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  margin-top:38px;max-width:820px;
}
.hero__stats li{border-top:1px solid rgba(255,255,255,.16);padding-top:16px}
.hero__stats b{
  display:block;font-family:"Bahnschrift","DIN Alternate","Segoe UI",sans-serif;
  font-size:clamp(26px,2.6vw,38px);color:#fff;line-height:1.1;letter-spacing:.01em;
}
.hero__stats li:first-child b{color:var(--cyan)}
.hero__stats span{font-size:12.5px;color:rgba(190,210,230,.62);letter-spacing:.04em}

.hero__spec{
  position:relative;z-index:0;
  display:grid;grid-template-columns:1fr 1fr;gap:24px 46px;
  margin-top:24px;padding-top:20px;max-width:1120px;
  border-top:1px solid rgba(255,255,255,.13);
}
.hero__spec::before{
  content:"";position:absolute;z-index:-1;pointer-events:none;
  left:50%;transform:translateX(-50%);width:100vw;
  top:-34px;bottom:-9999px;
  background:linear-gradient(180deg,rgba(4,10,20,0) 0,rgba(4,10,20,.74) 96px,rgba(4,10,20,.90) 168px,rgba(4,10,20,.94) 100%);
  backdrop-filter:blur(2px) saturate(115%);
}
.hero__spec__item span{
  display:block;margin-bottom:6px;
  font-size:11.5px;letter-spacing:.16em;color:rgba(72,226,240,.95);
}
.hero__spec__item p{
  font-size:12.5px;line-height:1.78;color:rgba(222,236,250,.86);letter-spacing:.01em;
}

.scroll{
  position:absolute;left:50%;bottom:26px;width:26px;height:44px;
  border:1px solid rgba(255,255,255,.26);border-radius:14px;z-index:3;
  transform:translateX(-50%);
}
.scroll i{
  position:absolute;left:50%;top:8px;width:3px;height:8px;border-radius:2px;
  background:var(--cyan);transform:translateX(-50%);
  animation:drop 1.8s var(--ease) infinite;
}
@keyframes drop{0%{opacity:0;top:8px}30%{opacity:1}100%{opacity:0;top:26px}}

/* =========================================================
   通用区块
   ========================================================= */
.section{padding:clamp(72px,8vw,116px) 0;position:relative}
.section--paper{background:var(--paper)}
.section--dark{background:var(--navy);color:rgba(214,230,244,.78);overflow:hidden}
.section--dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(70% 50% at 88% 0%,rgba(43,108,255,.16),transparent 60%),
    radial-gradient(60% 50% at 0% 100%,rgba(46,211,224,.10),transparent 60%);
}
.section--dark .wrap{position:relative;z-index:2}
.section--dark h3,.section--dark h4{color:#fff}

/* =========================================================
   01 产品概述
   ========================================================= */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pillar{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px 32px;transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
  overflow:hidden;
}
.pillar::before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;background:var(--blue);opacity:.9}
.pillar:nth-child(2)::before{background:var(--cyan)}
.pillar:nth-child(3)::before{background:var(--amber)}
.pillar:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.pillar__tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--blue);margin-bottom:10px;
}
.pillar h3{font-size:19px;margin-bottom:12px}
.pillar p{font-size:14.5px;line-height:1.85;color:var(--muted)}

.arch{
  margin-top:56px;display:grid;grid-template-columns:300px 1fr;gap:44px;
  align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:38px 36px;
}
.arch__side h4{font-size:17px;margin-bottom:10px}
.arch__side>p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:24px}
.arch__facts{display:grid;gap:10px}
.arch__facts li{display:flex;gap:10px;font-size:13px;color:var(--text);align-items:baseline}
.arch__facts span{
  flex:0 0 46px;font-size:11px;color:var(--muted);letter-spacing:.08em;
}
.arch__body{display:grid;gap:12px}
.layer{display:grid;grid-template-columns:150px 1fr;gap:14px;align-items:stretch}
.layer__name{
  border-radius:12px;padding:14px 16px;display:flex;flex-direction:column;justify-content:center;
  background:#6C8BAB;color:#fff;
}
.layer--2 .layer__name{background:#35BBCB}
.layer--3 .layer__name{background:var(--blue)}
.layer--4 .layer__name{background:var(--amber)}
.layer__name b{font-size:14px;letter-spacing:.04em}
.layer__name i{font-style:normal;font-size:10px;opacity:.7;letter-spacing:.12em;margin-top:2px}
.layer__items{
  display:grid;grid-template-columns:repeat(4,1fr);gap:8px;
  border:1px solid var(--line);border-radius:12px;padding:10px;background:var(--paper);
}
.layer__items span{
  display:flex;align-items:center;justify-content:center;text-align:center;
  min-height:38px;font-size:12.5px;color:var(--ink);
  background:#fff;border:1px solid #E7EEF7;border-radius:8px;padding:4px 6px;
}

/* =========================================================
   02 核心功能
   ========================================================= */
.domains{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.domain{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 30px;position:relative;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.domain:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.domain__no{
  font-family:"Bahnschrift","DIN Alternate",sans-serif;font-size:12px;color:#fff;
  background:var(--blue);border-radius:6px;padding:2px 8px;letter-spacing:.06em;
}
.domain:nth-child(2) .domain__no{background:var(--cyan)}
.domain:nth-child(3) .domain__no{background:var(--amber)}
.domain:nth-child(4) .domain__no{background:#7A9CC0}
.domain h3{font-size:18px;margin:12px 0 6px}
.domain__sub{font-size:13.5px;color:var(--muted);margin-bottom:16px}
.domain ul{display:grid;gap:7px}
.domain li{
  font-size:14px;color:var(--text);padding-left:18px;position:relative;line-height:1.7;
}
.domain li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:1.5px;background:var(--blue);opacity:.5;
}

.auth{margin-top:56px}
.auth__head{max-width:760px;margin-bottom:26px}
.auth__head h3{font-size:22px;margin-bottom:8px}
.auth__head p{font-size:14.5px;color:var(--muted)}
.auth__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.chip{
  display:flex;flex-direction:column;gap:2px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;font-size:14.5px;font-weight:700;color:var(--ink);
  position:relative;overflow:hidden;
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;
}
.chip::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;background:var(--blue);
  transform:scaleY(.4);transform-origin:top;transition:transform .35s var(--ease);
}
.chip em{font-style:normal;font-size:12px;font-weight:400;color:var(--muted)}
.chip:hover{transform:translateY(-3px);border-color:rgba(43,108,255,.4);box-shadow:0 14px 30px -22px rgba(11,24,42,.5)}
.chip:hover::before{transform:scaleY(1)}
.auth__note{margin-top:18px;font-size:12.5px;line-height:1.75;color:#5B7089;max-width:900px}

.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;margin-top:64px}
.split__col h3{font-size:20px;margin-bottom:22px}
.ticks{display:grid;gap:16px}
.ticks li{display:grid;grid-template-columns:1fr;gap:2px;font-size:13.5px;color:var(--muted);line-height:1.75;padding-left:16px;position:relative}
.ticks li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:1.5px;background:var(--cyan)}
.ticks li b{font-size:14.5px;color:var(--ink);font-weight:700}

.flow{counter-reset:f;display:grid;gap:10px}
.flow li{
  counter-increment:f;position:relative;
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:13px 18px 13px 52px;font-size:14px;color:var(--ink);font-weight:700;
}
.flow li i{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:22px;height:22px;border-radius:50%;background:var(--paper);
  display:flex;align-items:center;justify-content:center;
}
.flow li i::after{
  content:counter(f,decimal-leading-zero);font-size:10px;font-weight:700;color:var(--blue);
  font-family:"Bahnschrift",sans-serif;
}
.hint{margin-top:20px;font-size:13px;color:var(--muted);line-height:1.85;border-left:2px solid var(--cyan);padding-left:14px}

.proto{
  margin-top:64px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;
}
.proto__item{background:#fff;padding:20px 22px;display:flex;flex-direction:column;gap:4px}
.proto__item b{font-size:13px;font-family:"Bahnschrift","Segoe UI",sans-serif;color:var(--ink);letter-spacing:.02em}
.proto__item span{font-size:12px;color:#5B7089;line-height:1.6}

/* =========================================================
   03 应用场景
   ========================================================= */
.scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scene{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;display:flex;flex-direction:column;gap:12px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.scene h3{font-size:18px;display:flex;align-items:center;gap:10px}
.scene h3::after{content:"";flex:1;height:1px;background:var(--line)}
.scene p{font-size:13.5px;color:var(--muted);line-height:1.8;flex:1}
.scene b{font-size:14px;color:var(--blue)}
.scene span{font-size:11.5px;color:#61758C;line-height:1.6;letter-spacing:.01em}

.wall{margin-top:60px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px 36px}
.wall h3{font-size:18px;margin-bottom:24px}
.wall__grid{display:grid;grid-template-columns:1fr 1fr;gap:28px 44px}
.wall__grid h4{font-size:13px;color:var(--blue);margin-bottom:8px;letter-spacing:.04em}
.wall__grid p{font-size:13px;color:#4C6178;line-height:2}

/* =========================================================
   04 解决方案（深色）
   ========================================================= */
.topo{
  display:grid;grid-template-columns:1fr 86px 1.02fr 1fr;gap:0;align-items:center;
  background:rgba(255,255,255,.035);border:1px solid var(--line-dark);
  border-radius:22px;padding:36px 34px;
}
.topo__left{display:grid;justify-items:stretch;gap:0}
.node{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:12px;padding:14px 18px;display:flex;flex-direction:column;gap:2px;
}
.node i{font-style:normal;font-size:11px;color:rgba(190,214,236,.6);letter-spacing:.1em}
.node b{font-size:14.5px;color:#fff;font-weight:700}
.arrow{display:block;position:relative}
.arrow--down{height:44px}
.arrow--down::before{
  content:"";position:absolute;left:50%;transform:translateX(-.75px);
  top:6px;bottom:14px;width:1.5px;background:linear-gradient(180deg,rgba(46,211,224,.35),var(--cyan));
}
.arrow--down::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:8px;
  border-left:5px solid transparent;border-right:5px solid transparent;border-top:7px solid var(--cyan);
}
.arrow--right{position:relative;height:40px;align-self:center}
.arrow--right::before{
  content:"";position:absolute;left:4px;right:16px;top:50%;height:1.5px;
  background:linear-gradient(90deg,rgba(46,211,224,.3),var(--cyan));
}
.arrow--right::after{
  content:"";position:absolute;right:6px;top:calc(50% - 4px);
  border-top:5px solid transparent;border-bottom:5px solid transparent;border-left:8px solid var(--cyan);
}
.arrow--right em{
  position:absolute;left:50%;top:calc(50% - 26px);transform:translateX(-50%);
  font-style:normal;font-size:10.5px;letter-spacing:.06em;
  color:rgba(46,211,224,.82);white-space:nowrap;
}
.topo__core{
  background:linear-gradient(180deg,#0B1F35,#081726);
  border:1px solid rgba(46,211,224,.55);border-radius:16px;padding:24px 26px;
  box-shadow:0 0 0 1px rgba(46,211,224,.08),0 24px 60px -30px rgba(46,211,224,.45);
}
.topo__core i{font-style:normal;font-family:"Bahnschrift",sans-serif;font-size:11px;color:var(--cyan);letter-spacing:.12em}
.topo__core b{display:block;font-size:19px;color:#fff;margin:4px 0 14px}
.topo__core ul{display:grid;gap:6px}
.topo__core li{font-size:11.5px;color:rgba(190,214,236,.72);font-family:"Bahnschrift","Segoe UI",sans-serif;padding-left:10px;position:relative}
.topo__core li::before{content:"";position:absolute;left:0;top:8px;width:3px;height:3px;background:var(--cyan);border-radius:50%}
.topo__right{display:grid;gap:18px;padding-left:22px;border-left:1px solid var(--line-dark);margin-left:8px}
.topo__right div{display:grid;gap:2px}
.topo__right b{font-size:14px;color:#fff}
.topo__right span{font-size:12.5px;color:rgba(203,222,240,.72);line-height:1.7}

.steps{margin-top:64px}
.steps__head{margin-bottom:26px}
.steps__head h3{font-size:22px;margin-bottom:8px}
.steps__head p{font-size:14px;color:rgba(190,214,236,.6)}
.steps__list{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.steps__list li{
  background:rgba(255,255,255,.045);border:1px solid var(--line-dark);
  border-radius:14px;padding:20px 18px;position:relative;
  transition:background .3s,border-color .3s,transform .3s var(--ease);
}
.steps__list li:hover{background:rgba(255,255,255,.075);border-color:rgba(46,211,224,.4);transform:translateY(-3px)}
.steps__list i{
  font-style:normal;font-family:"Bahnschrift",sans-serif;font-size:12px;
  color:var(--cyan);letter-spacing:.1em;
}
.steps__list b{display:block;font-size:14.5px;color:#fff;margin:8px 0 8px}
.steps__list span{font-size:12px;color:rgba(203,222,240,.7);line-height:1.7}
.steps__list li::after{
  content:"";position:absolute;left:0;top:0;width:100%;height:2px;
  background:linear-gradient(90deg,var(--cyan),transparent);opacity:.55;
}

.realname{margin-top:64px}
.realname__head{margin-bottom:24px}
.realname__head h3{font-size:22px;margin-bottom:8px}
.realname__head p{font-size:14px;color:rgba(190,214,236,.6)}
.table{border:1px solid var(--line-dark);border-radius:16px;overflow:hidden}
.table__row{
  display:grid;grid-template-columns:1.1fr 1.3fr 1.7fr 1.5fr;gap:18px;
  padding:18px 24px;font-size:13px;line-height:1.7;color:rgba(206,224,240,.72);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.table__row:last-child{border-bottom:0}
.table__row b{color:#fff;font-size:14px}
.table__row--head{
  background:rgba(255,255,255,.05);color:rgba(190,214,236,.62);
  font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;
}
.table__row:not(.table__row--head):hover{background:rgba(255,255,255,.035)}

.experience{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:64px}
.experience article{
  background:rgba(255,255,255,.04);border:1px solid var(--line-dark);border-radius:18px;
  padding:28px 26px;
}
.experience h3{font-size:17px;margin-bottom:4px}
.experience article>p{font-size:12.5px;color:rgba(203,222,240,.66);margin-bottom:18px}
.ticks--dark li{color:rgba(190,214,236,.62)}
.ticks--dark li b{color:#fff}

/* =========================================================
   05 价值
   ========================================================= */
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.values article{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.values article:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.values i{
  font-style:normal;font-family:"Bahnschrift",sans-serif;font-size:12px;
  color:#B6C6D8;letter-spacing:.08em;
}
.values h3{font-size:18px;margin:6px 0 10px}
.values p{font-size:13.5px;color:#4E6379;line-height:1.85}

.roadmap{margin-top:60px;background:var(--ink);border-radius:24px;padding:44px 40px;color:#fff;position:relative;overflow:hidden}
.roadmap::before{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(46,211,224,.22),transparent 65%);
}
.roadmap h3{color:#fff;font-size:21px;margin-bottom:28px;position:relative}
.roadmap__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;position:relative}
.roadmap__grid div{display:grid;gap:6px;border-top:1px solid rgba(255,255,255,.16);padding-top:16px}
.roadmap__grid i{font-style:normal;font-size:11px;color:var(--cyan);letter-spacing:.12em;font-family:"Bahnschrift",sans-serif}
.roadmap__grid b{font-size:15.5px;color:#fff}
.roadmap__grid span{font-size:12.5px;color:rgba(203,222,240,.74);line-height:1.8}
.roadmap__hint{margin-top:26px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);
  font-size:12.5px;line-height:1.85;color:rgba(203,222,240,.66);position:relative}

/* =========================================================
   视频
   ========================================================= */
.video-sec__grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:center}
.video-sec h2{font-size:clamp(26px,3vw,38px);color:#fff;margin-bottom:16px}
.video-sec .lead{font-size:15px;color:rgba(214,230,244,.68);margin-bottom:24px}
.video-sec .ticks{margin-bottom:32px}
.video-sec__player{
  position:relative;border-radius:18px;overflow:hidden;
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 40px 90px -50px rgba(0,0,0,.9),0 0 0 1px rgba(46,211,224,.1);
  background:#000;
}
.video-sec__player video{width:100%;display:block;aspect-ratio:16/9;object-fit:cover}

/* =========================================================
   CTA / 页脚
   ========================================================= */
.cta{
  padding:clamp(60px,7vw,96px) 0;
  background:linear-gradient(100deg,#123B8C 0%,#1E63C8 45%,#12A0B4 100%);
  color:#fff;position:relative;overflow:hidden;
}
.cta::after{
  content:"";position:absolute;inset:0;
  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:72px 72px;opacity:.5;
  mask-image:radial-gradient(70% 100% at 20% 50%,#000,transparent 80%);
}
.cta__inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta h2{font-size:clamp(24px,3vw,38px);color:#fff;letter-spacing:-.01em}
.cta p{margin-top:12px;font-size:15px;color:rgba(230,244,252,.78)}
.cta__actions{display:flex;gap:14px;flex-wrap:wrap}
.cta .btn--primary{background:#fff;color:#0B2E6B;box-shadow:0 14px 32px -16px rgba(0,0,0,.5)}
.cta .btn--primary:hover{background:#F2F8FF}
.cta .btn--ghost{border-color:rgba(255,255,255,.5)}

.foot{background:var(--navy);color:rgba(190,214,236,.62);padding:64px 0 32px}
/* 五列：品牌 / 产品 / 资源 / 对接案例 / 联系（对接案例单独一列，避免资源列过长） */
.foot__grid{display:grid;grid-template-columns:1.45fr .8fr .7fr 1fr .95fr;gap:32px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.08)}
.foot__brand{display:flex;gap:14px;align-items:flex-start}
.foot__brand b{display:block;color:#fff;font-size:15px;margin-bottom:4px}
.foot__brand i{font-style:normal;font-size:12px;color:rgba(190,214,236,.5)}
.foot__col h4{font-size:12px;color:#fff;letter-spacing:.12em;margin-bottom:14px;text-transform:uppercase}
.foot__col a,.foot__col p{display:block;font-size:13px;line-height:2.1;color:rgba(190,214,236,.62);transition:color .25s}
.foot__col a:hover{color:var(--cyan)}
/* 「当前位置」：子页按当前文件名、首页按滚动位置，由 main.js 的 initFootSpy 打标 */
.foot__col a.is-active{color:var(--cyan);position:relative}
.foot__col a.is-active::before{
  content:"";position:absolute;left:-11px;top:50%;transform:translateY(-50%);
  width:2px;height:11px;border-radius:1px;background:currentColor;opacity:.9;
}
.foot__bottom{display:flex;justify-content:space-between;gap:20px;padding-top:24px;font-size:12px;color:rgba(190,214,236,.4);flex-wrap:wrap}
.foot__legal{display:flex;align-items:center;flex-wrap:wrap;gap:8px 18px;margin-top:10px;font-size:12px;line-height:1.7;color:rgba(190,214,236,.4)}
.foot__legal a{display:inline-flex;align-items:center;gap:6px;color:inherit;transition:color .25s}
.foot__legal a:hover{color:var(--cyan)}
.foot__legal img{display:block;width:12px;height:12px;opacity:.9;flex:0 0 12px}
.foot__legal-sep{display:block;width:1px;height:10px;background:rgba(255,255,255,.14);flex:0 0 1px}

.totop{
  position:fixed;right:26px;bottom:26px;width:44px;height:44px;border-radius:12px;
  background:rgba(11,24,42,.9);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:18px;z-index:80;opacity:0;pointer-events:none;transform:translateY(10px);
  transition:.35s var(--ease);backdrop-filter:blur(8px);
}
.totop.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}
.totop:hover{background:var(--blue)}

/* =========================================================
   联系我们（微信二维码弹层）
   ========================================================= */
.modal{
  position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;
  padding:32px 20px;opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.modal.is-open{opacity:1;visibility:visible}
.modal__backdrop{position:absolute;inset:0;background:rgba(4,11,21,.84);backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px)}
.modal__panel{
  position:relative;z-index:1;display:flex;max-width:min(86vw,380px);max-height:86vh;
  transform:translateY(16px) scale(.965);transition:transform .38s var(--ease);
}
.modal.is-open .modal__panel{transform:none}
.modal__img{display:block;width:auto;height:auto;max-width:100%;max-height:86vh;border-radius:18px;box-shadow:0 32px 80px rgba(0,0,0,.6)}
.modal__close{
  position:absolute;top:-16px;right:-16px;width:40px;height:40px;border-radius:50%;
  background:rgba(10,27,46,.94);border:1px solid rgba(255,255,255,.16);color:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .25s,transform .25s var(--ease),border-color .25s;
}
.modal__close:hover{background:var(--blue);border-color:transparent;transform:rotate(90deg)}
.modal__close::before,.modal__close::after{
  content:"";position:absolute;width:14px;height:1.6px;background:currentColor;border-radius:2px;
}
.modal__close::before{transform:rotate(45deg)}
.modal__close::after{transform:rotate(-45deg)}
body.is-locked{overflow:hidden}

/* =========================================================
   动效
   ========================================================= */
[data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1180px){
  /* 22→18：导航加入「相关教程」下拉后，按钮多了箭头，1024 视口会差十几像素折成两行 */
  .nav__menu{gap:18px}
  .scenes,.values,.experience{grid-template-columns:repeat(2,1fr)}
  .arch{grid-template-columns:1fr;gap:30px}
  .topo{grid-template-columns:1fr;gap:20px}
  .arrow--right{display:none}
  .topo__right{border-left:0;padding-left:0;margin-left:0;grid-template-columns:repeat(3,1fr)}
  .steps__list{grid-template-columns:repeat(3,1fr)}
  .proto{grid-template-columns:repeat(2,1fr)}
  .video-sec__grid{grid-template-columns:1fr;gap:36px}
}
@media (max-width:980px){
  .nav__menu{
    position:fixed;left:0;right:0;top:74px;bottom:0;overflow-y:auto;
    background:rgba(255,255,255,.985);backdrop-filter:blur(14px);
    flex-direction:column;gap:0;padding:8px 24px 28px;
    box-shadow:0 24px 40px -24px rgba(11,24,42,.4);
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:.3s var(--ease);
    color:var(--ink);
  }
  .nav__menu.is-open{transform:none;opacity:1;pointer-events:auto}
  body.is-locked{overflow:hidden}
  .nav__menu a{padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink)}
  .nav__menu a::after{display:none}
  .nav__menu a.nav__cta{
    display:inline-flex;justify-content:center;width:100%;margin-top:22px;
    font-size:15px;font-weight:700;letter-spacing:.02em;
    color:#fff;border:0;border-radius:10px;padding:0;
  }
  .nav__toggle{display:block}
  /* 「相关教程」下拉在抽屉里改为手风琴：按钮整行、子项缩进，不再浮层 */
  .nav__drop{position:static}
  .nav__drop-btn{
    display:flex;width:100%;justify-content:flex-start;gap:8px;
    padding:14px 0;font-size:15px;color:var(--ink);opacity:1;
    border-bottom:1px solid var(--line);
  }
  .nav__drop-btn::after{display:none}
  /* 抽屉是白底，当前页所在的「相关教程」用品牌蓝（青色在白底上太淡） */
  .nav__drop.has-active .nav__drop-btn{color:var(--blue)}
  .nav__sub{
    position:static;display:none;min-width:0;padding:2px 0 6px;
    background:none;box-shadow:none;border-radius:0;
    opacity:1;visibility:visible;pointer-events:auto;transform:none;
  }
  .nav__drop.is-open .nav__sub{display:flex}
  .nav__sub a{
    padding:12px 0 12px 14px;font-size:14px;border-radius:0;white-space:normal;
    border-bottom:1px solid var(--line);
  }
  .nav__sub a.is-active{background:none}
  .nav__right{margin-left:auto}
  .nav__right .btn--line{display:none}
  .pillars,.domains,.split{grid-template-columns:1fr}
  .auth__grid{grid-template-columns:repeat(2,1fr)}
  .wall__grid{grid-template-columns:1fr}
  .roadmap__grid{grid-template-columns:repeat(2,1fr)}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:18px;margin-top:40px}
  .hero__spec{grid-template-columns:1fr;gap:18px;margin-top:30px}
  .layer{grid-template-columns:110px 1fr}
  .layer__items{grid-template-columns:repeat(2,1fr)}
  .table__row{grid-template-columns:1fr;gap:6px;padding:16px 20px}
  .table__row--head{display:none}
  .table__row [data-label]::before{
    content:attr(data-label);display:block;font-size:10.5px;color:rgba(46,211,224,.72);
    letter-spacing:.12em;margin-bottom:3px;
  }
  .foot__grid{grid-template-columns:1fr 1fr}
  .steps__list{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .wrap{width:calc(100% - 36px)}
  .hero{padding-top:104px}
  .hero__stats{grid-template-columns:1fr 1fr}
  .hero__spec{gap:16px;padding-top:18px}
  .hero__spec__item p{font-size:11.5px;line-height:1.75}
  .arch{padding:26px 20px;border-radius:18px}
  .wall,.roadmap{padding:28px 22px}
  .topo{padding:24px 20px}
  .topo__right{grid-template-columns:1fr;gap:14px}
  .floor{grid-template-columns:1fr}
  .auth__grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .chip{padding:13px 14px;font-size:13.5px;border-radius:10px}
  .chip em{font-size:11px}
  .chip::before{top:12px;bottom:12px}
  .values article{padding:22px 20px}
  .scenes,.values,.experience{grid-template-columns:1fr}
  .scene{padding:24px 20px}
  .cta__inner{flex-direction:column;align-items:flex-start}
  .foot__grid{grid-template-columns:1fr}
  .foot__legal{flex-direction:column;align-items:flex-start;gap:8px;margin-top:12px}
  .foot__legal-sep{display:none}
  .roadmap__grid{grid-template-columns:1fr;gap:18px}
  .steps__list{gap:10px}
  .steps__list li{padding:16px 14px}
}

/* =========================================================
   功能清单（features.html）
   ========================================================= */
.fx-hero{
  position:relative;overflow:hidden;background:var(--navy);color:rgba(214,230,244,.78);
  padding:calc(74px + clamp(44px,5.6vw,78px)) 0 clamp(44px,4.6vw,64px);
  min-height:min(720px,86vh);display:flex;align-items:center;
}
.fx-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(70% 60% at 88% 0%,rgba(43,108,255,.18),transparent 62%),
    radial-gradient(58% 60% at 0% 108%,rgba(46,211,224,.11),transparent 60%);
}
.fx-hero .wrap{position:relative;z-index:2;flex:none}
.fx-hero h1{color:#fff;font-size:clamp(30px,4.2vw,52px);letter-spacing:-.02em}
.fx-hero h1 em{font-style:normal;color:var(--cyan)}
.fx-hero__lead{
  max-width:720px;margin-top:18px;font-size:clamp(14.5px,1.15vw,16.5px);
  line-height:1.9;color:rgba(214,230,244,.7);
}
.fx-hero__stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;max-width:880px;margin-top:38px;
  background:var(--line-dark);border:1px solid var(--line-dark);border-radius:14px;overflow:hidden;
}
.fx-hero__stats li{background:rgba(255,255,255,.035);padding:17px 22px}
.fx-hero__stats b{
  display:block;font-family:"Bahnschrift","DIN Alternate",sans-serif;
  font-size:30px;line-height:1.15;color:#fff;
}
.fx-hero__stats span{display:block;margin-top:3px;font-size:12.5px;color:rgba(190,214,236,.6)}

.fx-jump{display:flex;flex-wrap:wrap;gap:8px;margin-top:30px}
.fx-jump a{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 13px;border-radius:10px;
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.03);
  font-size:12.5px;color:rgba(214,230,244,.82);
  transition:border-color .25s,color .25s,background .25s,transform .25s var(--ease);
}
.fx-jump a i{
  font-style:normal;font-family:"Bahnschrift","DIN Alternate",sans-serif;
  font-size:11px;letter-spacing:.06em;color:rgba(46,211,224,.92);
}
.fx-jump a:hover{
  border-color:rgba(46,211,224,.55);color:#fff;background:rgba(46,211,224,.09);
  transform:translateY(-1px);
}

.fx-layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:clamp(28px,4.2vw,60px);align-items:start}
.fx-toc{
  position:sticky;top:96px;align-self:start;
  max-height:calc(100vh - 128px);overflow-y:auto;scrollbar-width:thin;
}
.fx-toc__head{
  padding-bottom:10px;margin-bottom:6px;border-bottom:1px solid var(--line);
  font-family:"Bahnschrift","DIN Alternate",sans-serif;font-size:11px;letter-spacing:.16em;color:var(--muted);
}
.fx-toc a{
  display:flex;align-items:baseline;gap:9px;padding:7px 0 7px 12px;
  border-left:2px solid transparent;font-size:13.5px;line-height:1.6;color:var(--muted);
  transition:color .2s,background .2s,border-color .2s;
}
.fx-toc a i{
  flex:0 0 17px;font-style:normal;font-family:"Bahnschrift","DIN Alternate",sans-serif;
  font-size:11px;color:#A9B8C9;
}
.fx-toc a em{font-style:normal;margin-left:auto;font-size:11px;color:#A9B8C9}
.fx-toc a:hover{color:var(--ink);background:var(--paper)}
.fx-toc a.is-active{
  color:var(--blue);font-weight:700;border-left-color:var(--blue);background:rgba(43,108,255,.05);
}
.fx-toc a.is-active i,.fx-toc a.is-active em{color:var(--blue)}

.fx-body{min-width:0}
.fx-group{scroll-margin-top:92px;margin-bottom:clamp(36px,4.2vw,54px)}
.fx-group:last-of-type{margin-bottom:0}
.fx-group__head{display:flex;align-items:baseline;gap:14px;padding-bottom:11px;border-bottom:2px solid var(--ink)}
.fx-group__no{
  font-family:"Bahnschrift","DIN Alternate",sans-serif;font-size:12.5px;
  letter-spacing:.12em;color:var(--blue);
}
.fx-group__head h3{font-size:clamp(19px,1.85vw,23px)}
.fx-group__count{margin-left:auto;font-size:12px;color:var(--muted);white-space:nowrap}
.fx-group__note{margin-top:12px;font-size:13px;line-height:1.85;color:var(--muted)}
.fx-list{margin-top:2px}
.fx-item{
  display:grid;grid-template-columns:minmax(168px,26%) minmax(0,1fr);gap:22px;
  padding:12px 0;border-bottom:1px solid var(--line);font-size:13.5px;align-items:baseline;
}
.fx-item b{font-size:14px;font-weight:600;line-height:1.7;color:var(--ink);transition:color .2s}
.fx-item span{line-height:1.8;color:var(--body)}
.fx-item:hover b{color:var(--blue)}
.fx-meta{
  margin-top:clamp(34px,3.6vw,46px);padding-top:18px;border-top:1px solid var(--line);
  font-size:12.5px;line-height:1.9;color:var(--muted);
}

@media (max-width:1180px){
  .fx-layout{grid-template-columns:196px minmax(0,1fr);gap:32px}
}
@media (max-width:980px){
  .fx-hero__stats{grid-template-columns:repeat(2,1fr);max-width:none}
  .fx-layout{grid-template-columns:1fr;gap:0}
  .fx-toc{
    position:sticky;top:74px;z-index:60;max-height:none;overflow-x:auto;overflow-y:visible;
    display:flex;gap:6px;margin:0 0 26px;padding:9px 0;
    background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);
    -webkit-overflow-scrolling:touch;
  }
  .fx-toc__head{display:none}
  .fx-toc a{flex:0 0 auto;border-left:0;border-bottom:2px solid transparent;padding:5px 9px}
  .fx-toc a em{display:none}
  .fx-toc a:hover{background:transparent}
  .fx-toc a.is-active{background:transparent;border-bottom-color:var(--blue)}
}
@media (max-width:640px){
  .fx-hero{padding-top:calc(74px + 30px);min-height:auto;padding-bottom:40px}
  .fx-hero__stats li{padding:14px 16px}
  .fx-hero__stats b{font-size:24px}
  .fx-jump{gap:6px}
  .fx-jump a{height:32px;padding:0 11px;font-size:12px}
  .fx-item{grid-template-columns:1fr;gap:3px;padding:11px 0}
  .fx-item span{font-size:13px}
  .fx-group__head{flex-wrap:wrap;gap:4px 12px}
  .fx-group__count{flex:0 0 100%;margin-left:0}
}

/* ---------- 章节延伸入口（如「查看完整功能清单」） ---------- */
.sec-more{margin-top:38px;text-align:center}
.sec-more a{
  display:inline-flex;align-items:center;gap:9px;
  height:44px;padding:0 26px;border-radius:999px;
  border:1px solid rgba(11,24,42,.16);background:#fff;
  font-size:14px;font-weight:600;color:var(--ink);text-decoration:none;
  transition:transform .25s,box-shadow .25s,color .25s,border-color .25s;
}
.sec-more a em{font-style:normal;font-size:15px;transition:transform .25s}
.sec-more a:hover{
  color:var(--blue);border-color:var(--blue);transform:translateY(-2px);
  box-shadow:0 10px 26px rgba(11,24,42,.10);
}
.sec-more a:hover em{transform:translateX(3px)}
@media (max-width:640px){
  .sec-more{margin-top:26px}
  .sec-more a{height:40px;padding:0 20px;font-size:13px}
}

/* ================================================================
   使用说明页 help.html（.hp-* 前缀，仅本页使用）
   ================================================================ */
.hp-hero{
  position:relative;overflow:hidden;background:var(--navy);color:rgba(214,230,244,.78);
  padding:calc(74px + clamp(44px,5.6vw,78px)) 0 clamp(44px,4.6vw,64px);
  min-height:min(720px,86vh);display:flex;align-items:center;
}
.hp-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(70% 60% at 12% 0%,rgba(43,108,255,.18),transparent 62%),
    radial-gradient(58% 60% at 100% 108%,rgba(46,211,224,.11),transparent 60%);
}
.hp-hero .wrap{position:relative;z-index:2;flex:none}
.hp-hero h1{color:#fff;font-size:clamp(30px,4.2vw,52px);letter-spacing:-.02em}
.hp-hero h1 em{font-style:normal;color:var(--cyan)}
.hp-hero__lead{
  margin-top:18px;max-width:760px;font-size:clamp(14.5px,1.1vw,16.5px);
  line-height:1.9;color:rgba(214,230,244,.74);
}
.hp-hero__stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;
  max-width:820px;margin-top:34px;list-style:none;
}
.hp-hero__stats li{background:rgba(255,255,255,.035);padding:17px 22px;border:1px solid rgba(255,255,255,.08);border-radius:12px}
.hp-hero__stats b{
  display:block;font-size:clamp(24px,2.4vw,34px);font-weight:800;color:#fff;letter-spacing:-.02em;
  font-family:ui-monospace,"SF Mono",Menlo,monospace;
}
.hp-hero__stats span{display:block;margin-top:3px;font-size:12.5px;color:rgba(190,214,236,.6)}
.hp-jump{display:flex;flex-wrap:wrap;gap:8px;margin-top:30px}
.hp-jump a{
  display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 15px;border-radius:999px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.04);
  font-size:13px;color:rgba(226,238,248,.86);text-decoration:none;transition:.25s;
}
.hp-jump a i{
  font-style:normal;font-size:11px;font-weight:800;letter-spacing:.06em;color:var(--cyan);
  font-family:ui-monospace,"SF Mono",Menlo,monospace;
}
.hp-jump a:hover{background:rgba(255,255,255,.1);border-color:rgba(46,211,224,.5);transform:translateY(-2px)}

.hp-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:clamp(28px,4.2vw,60px);align-items:start}
.hp-toc{
  position:sticky;top:calc(74px + 24px);max-height:calc(100vh - 130px);overflow-y:auto;
  padding-right:6px;border-left:1px solid var(--line);
}
.hp-toc__head{
  font-size:10.5px;font-weight:800;letter-spacing:.2em;color:var(--muted);
  padding:0 0 10px 14px;
}
.hp-toc a{
  display:flex;align-items:baseline;gap:8px;
  padding:6px 10px 6px 14px;border-left:2px solid transparent;margin-left:-1px;
  font-size:13px;color:var(--muted);text-decoration:none;line-height:1.55;transition:.2s;
}
.hp-toc a i{font-style:normal;font-size:11px;font-weight:800;color:#A9B8C9;font-family:ui-monospace,"SF Mono",Menlo,monospace}
.hp-toc a em{font-style:normal;margin-left:auto;font-size:11px;color:#B3BFCB;white-space:nowrap}
.hp-toc a.hp-toc__chap{font-weight:700;color:var(--ink);margin-top:8px}
.hp-toc a.hp-toc__chap:first-of-type{margin-top:0}
.hp-toc a.hp-toc__sub{padding-left:26px;font-size:12.5px}
.hp-toc a:hover{color:var(--ink);background:var(--paper)}
.hp-toc a.is-active{color:var(--blue);border-left-color:var(--blue);background:var(--paper)}
.hp-toc a.is-active i,.hp-toc a.is-active em{color:var(--blue)}

.hp-body{min-width:0;max-width:860px}
.hp-chapter{scroll-margin-top:92px;margin-bottom:clamp(40px,4.4vw,60px)}
.hp-chapter:last-of-type{margin-bottom:0}
.hp-chapter__head{
  display:flex;align-items:baseline;gap:14px;padding:0 0 12px 15px;
  border-bottom:2px solid var(--ink);position:relative;
}
.hp-chapter__head::before{
  content:"";position:absolute;left:0;top:3px;bottom:13px;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--blue),var(--cyan));
}
.hp-chapter__no{
  font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:13px;font-weight:800;
  color:var(--blue);letter-spacing:.04em;flex:none;
}
.hp-chapter__head h2{font-size:clamp(21px,2.1vw,27px)}
.hp-chapter__lead{margin-top:14px;font-size:14px;line-height:1.9;color:var(--muted)}

.hp-sec{scroll-margin-top:92px;margin-top:clamp(24px,2.6vw,32px)}
.hp-sec h3,.hp-sec h4{display:flex;align-items:baseline;gap:10px;line-height:1.5}
.hp-sec__no{
  font-family:ui-monospace,"SF Mono",Menlo,monospace;font-weight:800;color:var(--cyan);
  letter-spacing:.02em;flex:none;
}
.hp-sec--2 > h3{font-size:clamp(17px,1.5vw,20px);padding-bottom:10px;border-bottom:1px solid var(--line)}
.hp-sec--2 > h3 .hp-sec__no{font-size:13px}
.hp-sec--3 > h4{font-size:15.5px;margin-top:2px}
.hp-sec--3 > h4 .hp-sec__no{font-size:12px;color:#8FA3B8}
.hp-sec--4 > h4{font-size:14px;color:var(--body)}
.hp-sec--4 > h4 .hp-sec__no{font-size:11.5px;color:#9AA9BA}

.hp-p{margin-top:12px;font-size:14px;line-height:1.9;color:var(--body)}
.hp-list{margin-top:12px;padding-left:0;list-style:none}
.hp-list li{
  position:relative;padding-left:16px;margin-top:7px;font-size:14px;line-height:1.85;color:var(--body);
}
.hp-list li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}

.hp-field{
  display:grid;grid-template-columns:180px minmax(0,1fr);gap:4px 18px;
  padding:11px 0;border-bottom:1px solid rgba(11,24,42,.07);
}
.hp-field b{font-size:13.5px;font-weight:700;color:var(--ink);line-height:1.8}
.hp-field span{font-size:13.5px;line-height:1.85;color:var(--body)}
.hp-field:hover b{color:var(--blue)}

.hp-fig{margin:16px 0 4px}
/* 小图保持原始尺寸（不放大），大图铺到列宽以内。
   width 交给 HTML 的 width 属性（等价于原图宽），max-width 负责封顶；
   不要再写 width:auto —— 那会把属性提示盖掉，图片未加载时按 0 宽渲染（只剩 1px 边框），
   懒加载一进来每张图都撑开一两百像素，把页面越滚越长、锚点落点全乱。 */
.hp-fig img{
  display:block;max-width:100%;height:auto;margin-inline:auto;
  border-radius:12px;cursor:zoom-in;
  border:1px solid var(--line);background:#fff;
  box-shadow:0 8px 24px rgba(11,24,42,.08);transition:box-shadow .25s,transform .25s;
}
.hp-fig img:hover{box-shadow:0 14px 34px rgba(11,24,42,.14);transform:translateY(-2px)}
.hp-fig figcaption{
  display:flex;align-items:center;gap:10px;margin-top:8px;
  font-size:12px;color:var(--muted);
}
.hp-fig figcaption span{
  padding:1px 8px;border-radius:999px;border:1px solid var(--line);
  font-size:11px;color:#93A1B2;
}
.hp-meta{
  margin-top:clamp(34px,4vw,52px);padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;line-height:1.9;color:var(--muted);
}

@media (max-width:1180px){
  .hp-layout{grid-template-columns:216px minmax(0,1fr);gap:32px}
}
@media (max-width:980px){
  .hp-hero__stats{grid-template-columns:repeat(2,1fr);max-width:none}
  .hp-layout{grid-template-columns:1fr;gap:0}
  .hp-toc{
    position:sticky;top:74px;z-index:60;max-height:none;overflow-x:auto;overflow-y:visible;
    display:flex;gap:6px;margin:0 0 26px;padding:9px 0;border-left:0;
    background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);
    -webkit-overflow-scrolling:touch;
  }
  .hp-toc__head{display:none}
  .hp-toc a,.hp-toc a.hp-toc__sub{flex:0 0 auto;padding:5px 9px;margin:0;border-left:0;border-bottom:2px solid transparent;font-size:13px}
  .hp-toc a.hp-toc__chap{margin-top:0}
  .hp-toc a em{display:none}
  .hp-toc a:hover{background:transparent}
  .hp-toc a.is-active{background:transparent;border-bottom-color:var(--blue)}
  .hp-field{grid-template-columns:1fr;gap:2px}
}
@media (max-width:640px){
  .hp-hero{padding-top:calc(74px + 30px);min-height:auto;padding-bottom:40px}
  .hp-hero__stats{gap:10px}
  .hp-hero__stats li{padding:14px 16px}
  .hp-hero__stats b{font-size:24px}
  .hp-jump{gap:6px}
  .hp-jump a{height:32px;padding:0 11px;font-size:12px}
  .hp-fig{margin:12px 0 2px}
  .hp-fig figcaption{flex-wrap:wrap;gap:6px}
}

/* 截图放大层：说明页的图多为宽截图，覆盖 .modal__panel 给二维码定的 380px 上限 */
#hpLightbox .modal__panel{max-width:min(92vw,1240px);max-height:88vh}
#hpLightbox .modal__img{max-width:min(92vw,1240px);max-height:88vh;border-radius:12px}
@media (max-width:640px){
  #hpLightbox .modal{padding:18px 12px}
  #hpLightbox .modal__panel{max-width:94vw;max-height:84vh}
  #hpLightbox .modal__img{max-width:94vw;max-height:84vh}
}

/* ================================================================
   华为对接实战页 help_hw.html（.hw-* 前缀，仅本页使用）
   ================================================================ */
.hw-hero{
  position:relative;overflow:hidden;background:var(--navy);color:rgba(214,230,244,.78);
  padding:calc(74px + clamp(44px,5.6vw,78px)) 0 clamp(44px,4.6vw,64px);
}
.hw-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(70% 60% at 8% 0%,rgba(43,108,255,.20),transparent 62%),
    radial-gradient(58% 60% at 100% 108%,rgba(46,211,224,.11),transparent 60%);
}
.hw-hero .wrap{position:relative;z-index:2}
.hw-hero h1{color:#fff;font-size:clamp(28px,3.9vw,48px);letter-spacing:-.02em}
.hw-hero h1 em{font-style:normal;color:var(--cyan)}
.hw-hero__lead{
  margin-top:18px;max-width:820px;font-size:clamp(14.5px,1.1vw,16.5px);
  line-height:1.9;color:rgba(214,230,244,.74);
}
.hw-hero__stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;
  max-width:860px;margin-top:32px;list-style:none;
}
.hw-hero__stats li{background:rgba(255,255,255,.035);padding:17px 22px;border:1px solid rgba(255,255,255,.08);border-radius:12px}
.hw-hero__stats b{
  display:block;font-size:clamp(24px,2.4vw,34px);font-weight:800;color:#fff;letter-spacing:-.02em;
  font-family:ui-monospace,"SF Mono",Menlo,monospace;
}
.hw-hero__stats span{display:block;margin-top:3px;font-size:12.5px;color:rgba(190,214,236,.6)}
.hw-jump{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.hw-jump a{
  display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 15px;border-radius:999px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.04);
  font-size:13px;color:rgba(226,238,248,.86);text-decoration:none;transition:.25s;
}
.hw-jump a i{
  font-style:normal;font-size:11px;font-weight:800;letter-spacing:.06em;color:var(--cyan);
  font-family:ui-monospace,"SF Mono",Menlo,monospace;
}
.hw-jump a:hover{background:rgba(255,255,255,.1);border-color:rgba(46,211,224,.5);transform:translateY(-2px)}

.hw-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:clamp(28px,4.2vw,60px);align-items:start}
.hw-toc{
  position:sticky;top:calc(74px + 24px);max-height:calc(100vh - 130px);overflow-y:auto;
  padding-right:6px;border-left:1px solid var(--line);
}
.hw-toc__head{
  font-size:10.5px;font-weight:800;letter-spacing:.2em;color:var(--muted);
  padding:0 0 10px 14px;
}
.hw-toc a{
  display:flex;align-items:baseline;gap:8px;
  padding:7px 10px 7px 14px;border-left:2px solid transparent;margin-left:-1px;
  font-size:13.5px;color:var(--muted);text-decoration:none;line-height:1.55;transition:.2s;
}
.hw-toc a i{font-style:normal;font-size:11px;font-weight:800;color:#A9B8C9;font-family:ui-monospace,"SF Mono",Menlo,monospace}
.hw-toc a:hover{color:var(--ink);background:var(--paper)}
.hw-toc a.is-active{color:var(--blue);border-left-color:var(--blue);background:var(--paper);font-weight:600}
.hw-toc a.is-active i{color:var(--blue)}
.hw-toc__more{
  display:block;margin:14px 0 0 14px;padding:0;border-left:0 !important;
  font-size:12.5px;color:var(--blue) !important;background:none !important;
}
.hw-toc__more:hover{text-decoration:underline}

.hw-body{min-width:0}
.hw-sec{scroll-margin-top:92px}
.hw-sec + .hw-sec{margin-top:clamp(32px,3.6vw,48px)}
.hw-sec > h2{
  display:flex;align-items:baseline;gap:12px;padding-bottom:12px;border-bottom:2px solid var(--ink);
  font-size:clamp(20px,2vw,26px);
}
.hw-sec__no{
  font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:13px;font-weight:800;
  color:var(--blue);letter-spacing:.04em;flex:none;
}
.hw-p{margin-top:14px;font-size:14.5px;line-height:1.95;color:var(--body)}
.hw-sec > .hw-p:first-of-type{margin-top:16px}

.hw-code{
  margin-top:16px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#0E1726;
}
.hw-code__bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:9px 14px;background:#111D31;border-bottom:1px solid rgba(255,255,255,.07);
}
.hw-code__bar span{
  font-size:12px;letter-spacing:.04em;color:rgba(190,214,236,.72);
}
.hw-code__hint{
  display:none;font-style:normal;margin-left:8px;font-size:11px;color:rgba(190,214,236,.5);
}
.hw-code__copy{
  height:26px;padding:0 12px;border-radius:999px;cursor:pointer;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  font-size:12px;color:rgba(226,238,248,.86);transition:.2s;
}
.hw-code__copy:hover{background:rgba(255,255,255,.14);border-color:rgba(46,211,224,.5)}
.hw-code__copy.is-done{color:var(--cyan);border-color:rgba(46,211,224,.6)}
.hw-code pre{
  margin:0;padding:16px 18px;overflow-x:auto;
  font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  font-size:12.8px;line-height:1.85;color:#CFE0F2;white-space:pre;tab-size:2;
  -webkit-overflow-scrolling:touch;
}

/* 长脚本（设备侧配置汇总）：锁高滚动，避免整页被数百行配置撑开 */
.hw-code--tall pre{max-height:460px;overflow-y:auto}

/* 字段对照表：窄屏横向滚动，首列不折行 */
.hw-table{margin:16px 0 4px;overflow-x:auto;border:1px solid var(--line);
  border-radius:12px;-webkit-overflow-scrolling:touch}
.hw-table table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.72;min-width:520px}
.hw-table th{background:var(--paper);color:var(--ink);font-weight:700;text-align:left;
  padding:10px 14px;white-space:nowrap;border-bottom:1px solid var(--line)}
.hw-table td{padding:10px 14px;color:var(--body);border-top:1px solid rgba(224,231,240,.7);vertical-align:top}
.hw-table tbody tr:first-child td{border-top:0}
.hw-table tbody tr:hover td{background:rgba(11,24,42,.018)}
.hw-table strong{color:var(--ink);font-weight:700}
.hw-table code{font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:12.2px;
  background:var(--paper);border:1px solid var(--line);border-radius:5px;padding:1px 5px;
  color:var(--ink);white-space:nowrap}

/* 提示块（原文 > 引用）：左竖线 + 浅底，承载「建议 / 注意 / 结论」 */
.hw-note{margin:16px 0 4px;padding:14px 18px;background:var(--paper);
  border-left:3px solid var(--blue);border-radius:0 10px 10px 0}
.hw-note > .hw-p{margin-top:0;font-size:13.8px;line-height:1.9}
.hw-note > .hw-p + .hw-p{margin-top:10px}
.hw-note > .hw-table{margin:12px 0 2px}
.hw-note > .hw-list{margin-top:10px}
/* 长引用（文档适用版本、修订记录等元信息）：去掉提示框底纹，降一档字号当小字读 */
.hw-note--plain{background:none;border-left:0;border-radius:0;padding:0;margin:16px 0 4px}
.hw-note--plain > .hw-p{font-size:13px;line-height:1.85;color:var(--muted);padding-left:14px;position:relative}
.hw-note--plain > .hw-p::before{content:"";position:absolute;left:0;top:.72em;width:4px;height:4px;
  border-radius:50%;background:var(--line)}
.hw-note--plain > .hw-p + .hw-p{margin-top:6px}

/* 正文四级标题（####）：比节标题再小一档 */
.hw-h4{margin:24px 0 0;font-size:15px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.hw-h4 + .hw-p{margin-top:8px}

/* 正文行内代码与链接：段落里的代码允许折行，避免长命令把正文顶宽 */
.hw-p code,.hw-note code,.hw-meta code{
  font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:12.4px;
  background:var(--paper);border:1px solid var(--line);border-radius:5px;padding:1px 5px;
  color:var(--ink);word-break:break-word;
}
.hw-note code{background:#fff}
.hw-p a{color:var(--blue)}
.hw-p strong{color:var(--ink)}

.hw-fig{margin:18px 0 4px}
.hw-fig img{
  display:block;width:100%;height:auto;border-radius:12px;cursor:zoom-in;
  border:1px solid var(--line);background:#fff;
  box-shadow:0 8px 24px rgba(11,24,42,.08);transition:box-shadow .25s,transform .25s;
}
.hw-fig img:hover{box-shadow:0 14px 34px rgba(11,24,42,.14);transform:translateY(-2px)}
.hw-fig figcaption{
  display:flex;align-items:center;gap:10px;margin-top:8px;
  font-size:12px;color:var(--muted);
}
.hw-fig figcaption span{
  padding:1px 8px;border-radius:999px;border:1px solid var(--line);
  font-size:11px;color:#93A1B2;
}
.hw-meta{
  margin-top:clamp(32px,4vw,48px);padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;line-height:1.9;color:var(--muted);
}
.hw-meta a{color:var(--blue);text-decoration:none;overflow-wrap:break-word}
.hw-meta a:hover{text-decoration:underline}

@media (max-width:1180px){
  .hw-layout{grid-template-columns:200px minmax(0,1fr);gap:30px}
}
@media (max-width:980px){
  .hw-hero__stats{grid-template-columns:repeat(2,1fr);max-width:none}
  .hw-layout{grid-template-columns:1fr;gap:0}
  .hw-toc{
    position:sticky;top:74px;z-index:60;max-height:none;overflow-x:auto;overflow-y:visible;
    display:flex;gap:6px;margin:0 0 24px;padding:9px 0;border-left:0;
    background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);
    -webkit-overflow-scrolling:touch;
  }
  .hw-toc__head{display:none}
  .hw-toc a{flex:0 0 auto;padding:5px 9px;margin:0;border-left:0;border-bottom:2px solid transparent}
  .hw-toc a:hover{background:transparent}
  .hw-toc a.is-active{background:transparent;border-bottom-color:var(--blue)}
  .hw-toc__more{margin:0 0 0 4px;padding:5px 9px;align-self:center;border-bottom:0 !important}
}
@media (max-width:640px){
  .hw-hero{padding-top:calc(74px + 30px);padding-bottom:38px}
  .hw-hero__stats{gap:10px}
  .hw-hero__stats li{padding:14px 16px}
  .hw-hero__stats b{font-size:24px}
  .hw-jump{gap:6px}
  .hw-jump a{height:32px;padding:0 11px;font-size:12px}
  .hw-code pre{font-size:12px;padding:13px 14px}
  .hw-code__hint{display:inline}
  .hw-fig{margin:14px 0 2px}
}

/* 截图放大层：对接页的截图多为宽图，覆盖 .modal__panel 给二维码定的 380px 上限 */
#hwLightbox .modal__panel{max-width:min(92vw,1240px);max-height:88vh}
#hwLightbox .modal__img{max-width:min(92vw,1240px);max-height:88vh;border-radius:12px}
@media (max-width:640px){
  #hwLightbox .modal{padding:18px 12px}
  #hwLightbox .modal__panel{max-width:94vw;max-height:84vh}
  #hwLightbox .modal__img{max-width:94vw;max-height:84vh}
}

/* 对接 / 认证方式系列页补充：步骤列表、空节标题、目录子级、相关案例条 */
.hw-list{margin:14px 0 0;padding:0;list-style:none}
.hw-list li{
  position:relative;margin-top:9px;padding-left:2px;
  font-size:14.5px;line-height:1.9;color:var(--body);
}
.hw-list li b{
  display:inline-block;min-width:20px;margin-right:9px;
  font-family:ui-monospace,"SF Mono",Menlo,monospace;
  font-size:12.5px;font-weight:800;color:var(--blue);
}
.hw-list li::before{
  content:"";position:absolute;left:-14px;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--cyan);opacity:0;
}
/* 无序号条目（说明 / 验证清单）与域名白名单网格：白名单按三列排，窄屏逐级降列 */
.hw-list li code{
  font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:12.4px;
  background:var(--paper);border:1px solid var(--line);border-radius:5px;padding:1px 5px;
  color:var(--ink);word-break:break-word;
}
.hw-list--cols{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px 22px;margin-top:14px;
}
.hw-list--cols li{
  margin:0;padding-left:13px;font-size:12.8px;line-height:1.7;word-break:break-all;
  font-family:ui-monospace,"SF Mono",Menlo,monospace;color:var(--body);
}
.hw-list--cols li::before{left:0;top:.66em;width:4px;height:4px;background:var(--muted);opacity:.55}
.hw-list--dot li{padding-left:16px}
.hw-list--dot li::before{left:2px;top:.72em;width:5px;height:5px;background:var(--muted);opacity:.55}
.hw-list--cols li code{
  font:inherit;background:none;border:0;border-radius:0;padding:0;color:inherit;word-break:inherit;
}
@media (max-width:980px){
  .hw-list--cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .hw-list--cols{grid-template-columns:1fr;gap:6px}
}
.hw-toc a.hw-toc__sub{padding-left:26px;font-size:12.5px}
.hw-sec--bare > h2{
  padding-bottom:0;border-bottom:0;font-size:clamp(16px,1.5vw,19px);color:var(--body);
}
.hw-sec--bare > h2 .hw-sec__no{color:var(--cyan)}
.hw-sec--bare + .hw-sec{margin-top:16px}
.hw-more{margin-top:clamp(34px,4vw,48px);padding-top:22px;border-top:1px solid var(--line)}
.hw-more__head{font-size:10.5px;font-weight:800;letter-spacing:.2em;color:var(--muted)}
.hw-more__list{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.hw-more__list a{
  display:inline-flex;align-items:center;height:34px;padding:0 15px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  font-size:13px;color:var(--body);text-decoration:none;
  transition:transform .25s,box-shadow .25s,color .25s,border-color .25s;
}
.hw-more__list a:hover{
  color:var(--blue);border-color:var(--blue);transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(11,24,42,.08);
}
.hw-more__list a.is-active{background:var(--navy);border-color:var(--navy);color:#fff}
@media (max-width:640px){
  .hw-more__list{gap:6px}
  .hw-more__list a{height:32px;padding:0 12px;font-size:12.5px}
}

/* 原文 h4 级小节（「1.登录阿里云…」）：比 h3 级分组标题小一档，形成两级层次 */
.hw-sec--sub{margin-top:22px}
.hw-sec--sub > h2{
  font-size:clamp(16.5px,1.6vw,20px);
  padding-bottom:8px;border-bottom:1px solid var(--line);color:var(--body);
}
.hw-sec--sub > h2 .hw-sec__no{font-size:12px;color:#8FA3B8}
.hw-sec--sub + .hw-sec--sub{margin-top:18px}