/* Klariq — 设计系统（浅色为主 + Hero 深色块 / Geist + 思源黑体 / fadeSlideUp） */

*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#f7f8fa;            /* 页面浅底 */
  --bg-soft:#eef1f5;       /* 交替区块 */
  --bg-card:#ffffff;       /* 卡片 */
  --line:rgba(17,22,29,.12);
  --line-2:rgba(17,22,29,.18);
  --tx:#11161d;            /* 主文字 近黑 */
  --tx-2:rgba(17,22,29,.80);
  --tx-3:rgba(17,22,29,.58);
  --tx-4:rgba(17,22,29,.44);
  --ink:#11161d;           /* 深色按钮底 */
  --accent:#0e9b86;        /* 浅底上用的深青绿（链接/小标记）*/
  --accent-bright:#5ad1c4; /* 深色 hero 上用的亮青绿 */
  --warn:#b0710a;
  --radius:12px;
  --maxw:1200px;
  --font:'Geist','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
}
html{-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--tx);
  font-family:var(--font);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,video{display:block;max-width:100%}
::selection{background:rgba(14,155,134,.22)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
@media(min-width:768px){.wrap{padding:0 48px}}
@media(min-width:1024px){.wrap{padding:0 64px}}

/* ---------- 顶部转化条（三件套）· 浅青绿色条 ---------- */
.cbar{
  position:relative;z-index:40;
  background:#e6f6f2;border-bottom:1px solid rgba(14,155,134,.25);
  font-size:13px;
}
.cbar-in{display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  max-width:var(--maxw);margin:0 auto;padding:9px 24px}
.cbar .lead{color:var(--tx-2)}
.cbar .lead strong{color:var(--tx);font-weight:600}
.code-chip{display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line-2);border-radius:8px;
  padding:4px 6px 4px 12px;font-weight:600;letter-spacing:.5px;color:var(--tx)}
.code-chip .c{font-family:'Geist',monospace}
.copy-btn{display:inline-flex;align-items:center;gap:5px;cursor:pointer;
  background:rgba(17,22,29,.07);border:0;color:var(--tx);border-radius:6px;
  padding:4px 9px;font:inherit;font-size:12px;transition:background .2s}
.copy-btn:hover{background:rgba(17,22,29,.13)}
.copy-btn.ok{background:rgba(14,155,134,.18);color:#0a6e60}
.cbar .reg{margin-left:auto;display:inline-flex;align-items:center;gap:6px;
  background:var(--ink);color:#fff;border-radius:8px;padding:6px 16px;
  font-weight:600;font-size:13px;transition:transform .2s}
.cbar .reg:hover{transform:scale(1.04)}
.cbar .note{flex-basis:100%;color:var(--tx-4);font-size:11px;line-height:1.5;margin-top:2px}
@media(min-width:768px){.cbar-in{padding:9px 48px}}
@media(min-width:1024px){.cbar-in{padding:9px 64px}}

/* ---------- 导航 · 浅色 ---------- */
.nav{position:relative;z-index:30;display:flex;align-items:center;justify-content:space-between;
  padding:18px 24px;background:var(--bg);border-bottom:1px solid var(--line)}
@media(min-width:768px){.nav{padding:18px 48px}}
@media(min-width:1024px){.nav{padding:18px 64px}}
.brand{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:600;letter-spacing:-.01em;color:var(--tx)}
.brand .mark{width:26px;height:26px;border-radius:7px;display:grid;place-items:center;
  background:linear-gradient(135deg,#5ad1c4,#3a7bd5);color:#03110f;font-weight:700;font-size:15px}
.nav-mid{display:none;gap:30px;margin-left:34px}
.nav-mid a{font-size:14px;color:var(--tx-3);transition:color .2s}
.nav-mid a:hover,.nav-mid a[aria-current]{color:var(--tx)}
.nav-left{display:flex;align-items:center}
.nav-cta{display:none;background:var(--ink);color:#fff;border-radius:9px;padding:9px 20px;
  font-size:14px;font-weight:600;transition:transform .2s}
.nav-cta:hover{transform:scale(1.05)}
.burger{width:44px;height:44px;display:grid;place-items:center;background:0;border:0;color:var(--tx);cursor:pointer}
.burger:active{transform:scale(.9)}
@media(min-width:768px){.nav-mid,.nav-cta{display:flex}.burger{display:none}}

/* 移动菜单 · 浅色 */
.mmenu{position:fixed;inset:0;z-index:50;background:rgba(255,255,255,.98);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  display:flex;flex-direction:column;justify-content:center;padding:0 32px;gap:6px;
  opacity:0;pointer-events:none;transform:translateY(-8px);
  transition:opacity .35s,transform .35s}
.mmenu.open{opacity:1;pointer-events:auto;transform:translateY(0)}
.mmenu a{font-size:26px;font-weight:500;color:var(--tx-2);padding:10px 0}
.mmenu a:hover{color:var(--tx)}
.mmenu .mreg{margin-top:18px;width:max-content;background:var(--ink);color:#fff;border-radius:999px;
  padding:12px 28px;font-size:16px;font-weight:600}
.mclose{position:absolute;top:22px;right:24px;width:40px;height:40px;background:0;border:0;color:var(--tx);cursor:pointer}

/* ---------- 首屏 Hero · 保持深色（视频）---------- */
.hero{position:relative;min-height:calc(100vh - 80px);min-height:calc(100svh - 80px);overflow:hidden;display:flex;flex-direction:column;background:#06080a}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 38%;z-index:0}
.hero-shade{position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(0,0,0,.68) 0%,rgba(0,0,0,.38) 30%,rgba(0,0,0,.10) 56%,rgba(0,0,0,0) 78%),
             linear-gradient(0deg,rgba(0,0,0,.60) 0%,rgba(0,0,0,0) 46%)}
.hero-in{position:relative;z-index:2;flex:1;display:flex;flex-direction:column;justify-content:flex-end;
  max-width:var(--maxw);width:100%;margin:0 auto;padding:48px 24px 56px}
.hero .eyebrow{font-size:13px;color:rgba(255,255,255,.85);letter-spacing:.04em;margin-bottom:18px;
  display:inline-flex;align-items:center;gap:9px}
.hero .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-bright)}
.hero h1{font-size:clamp(30px,6vw,68px);font-weight:600;line-height:1.12;letter-spacing:-.02em;
  max-width:18ch;color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.55)}
.hero h1 em{font-style:normal;color:var(--accent-bright)}
.hero .eyebrow,.hero-lead{text-shadow:0 1px 10px rgba(0,0,0,.5)}
.hero-lead{margin-top:22px;max-width:46ch;color:rgba(255,255,255,.78);font-size:clamp(15px,1.6vw,18px)}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.hero .btn-primary{background:#fff;color:#11161d}
.hero .btn-ghost{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.28);color:#fff}
.hero .btn-ghost:hover{background:rgba(255,255,255,.18)}
@media(min-width:768px){.hero-in{padding:48px 48px 64px}}
@media(min-width:1024px){.hero{min-height:calc(100vh - 80px);min-height:calc(100svh - 80px)}.hero-in{padding:48px 64px 72px}}

/* 入场动画 */
@keyframes fadeSlideUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.fu{animation:fadeSlideUp .8s ease both}
.d1{animation-delay:.15s}.d2{animation-delay:.3s}.d3{animation-delay:.5s}.d4{animation-delay:.7s}.d5{animation-delay:.9s}
@media(prefers-reduced-motion:reduce){.fu{animation:none}}

/* ---------- 按钮（浅底默认）---------- */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:10px;
  font-size:14px;font-weight:600;padding:11px 20px;transition:transform .2s,background .2s,border-color .2s;cursor:pointer;border:1px solid transparent}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{transform:scale(1.04)}
.btn-ghost{background:#fff;border-color:var(--line-2);color:var(--tx)}
.btn-ghost:hover{background:var(--bg-soft)}

/* ---------- 通用区块 ---------- */
.section{padding:72px 0}
.section.alt{background:var(--bg-soft)}
@media(min-width:768px){.section{padding:96px 0}}
.sec-head{max-width:60ch;margin-bottom:40px}
.sec-kicker{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--tx-4);margin-bottom:14px}
.sec-head h2{font-size:clamp(24px,3.4vw,40px);font-weight:600;line-height:1.18;letter-spacing:-.01em}
.sec-head p{margin-top:14px;color:var(--tx-3);font-size:16px}

/* ---------- 支柱门户宫格 ---------- */
.portal{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.portal{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.portal{grid-template-columns:repeat(3,1fr)}}
.pcard{position:relative;display:flex;flex-direction:column;gap:10px;
  background:var(--bg-card);border:1px solid var(--line);border-radius:16px;
  padding:24px;transition:border-color .25s,transform .25s,box-shadow .25s;min-height:190px}
.pcard:hover{border-color:var(--line-2);transform:translateY(-3px);box-shadow:0 10px 30px rgba(17,22,29,.08)}
.pcard .ic{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:rgba(14,155,134,.12);color:var(--accent);margin-bottom:6px}
.pcard .ic svg{width:20px;height:20px}
.pcard h3{font-size:19px;font-weight:600;letter-spacing:-.01em}
.pcard p{color:var(--tx-3);font-size:14px;flex:1}
.pcard .meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.pcard .tag{font-size:12px;color:var(--tx-3);background:rgba(17,22,29,.04);
  border:1px solid var(--line);border-radius:999px;padding:3px 10px}
.pcard .go{display:inline-flex;align-items:center;gap:6px;color:var(--tx);font-size:13px;font-weight:600;margin-top:4px}
.pcard .go svg{width:15px;height:15px;transition:transform .2s}
.pcard:hover .go svg{transform:translateX(3px)}
.pcard.soon{opacity:.62}
.pcard.soon .go{color:var(--tx-4)}

/* ---------- 链接枢纽（首页宽内链）---------- */
.hub{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:640px){.hub{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.hub{grid-template-columns:repeat(4,1fr)}}
.hub h4{font-size:14px;font-weight:600;margin-bottom:14px;color:var(--tx)}
.hub ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.hub a{font-size:13.5px;color:var(--tx-3);transition:color .2s}
.hub a:hover{color:var(--accent)}

/* ---------- 信任条 ---------- */
.trust{display:grid;grid-template-columns:1fr;gap:18px;margin-top:8px}
@media(min-width:768px){.trust{grid-template-columns:repeat(3,1fr)}}
.tcard{border:1px solid var(--line);border-radius:14px;padding:22px;background:var(--bg-card)}
.tcard h3{font-size:16px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:9px}
.tcard h3 svg{width:18px;height:18px;color:var(--accent)}
.tcard p{color:var(--tx-3);font-size:14px}

/* ---------- 页脚 · 浅色 ---------- */
.foot{border-top:1px solid var(--line);background:var(--bg-soft);padding:56px 0 40px;font-size:13.5px}
.foot-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media(min-width:768px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.foot .brand{margin-bottom:14px}
.foot-about{color:var(--tx-3);max-width:36ch}
.foot h4{font-size:13px;color:var(--tx);margin-bottom:13px;font-weight:600}
.foot ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.foot a{color:var(--tx-3)}
.foot a:hover{color:var(--accent)}
.disclosure{margin-top:40px;padding-top:24px;border-top:1px solid var(--line);
  color:var(--tx-4);font-size:12px;line-height:1.7;max-width:90ch}
.disclosure strong{color:var(--tx-2)}
.copyline{margin-top:18px;color:var(--tx-4);font-size:12px;display:flex;flex-wrap:wrap;gap:6px 16px}

/* ---------- 文章排版（内容页）---------- */
.article{padding:46px 0 80px}
.article-head{max-width:760px;margin:0 auto 30px}
.crumb{font-size:13px;color:var(--tx-4);margin-bottom:18px;display:flex;gap:8px;flex-wrap:wrap}
.crumb a{color:var(--tx-3)}.crumb a:hover{color:var(--accent)}
.article-head h1{font-size:clamp(27px,4.2vw,44px);font-weight:600;line-height:1.18;letter-spacing:-.015em}
.byline{margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;color:var(--tx-4);font-size:13px}
.byline .au{display:flex;align-items:center;gap:9px;color:var(--tx-2)}
.byline .av{width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,#5ad1c4,#3a7bd5);display:grid;place-items:center;color:#03110f;font-weight:700;font-size:12px}
.article-cover{max-width:980px;margin:0 auto 36px;border-radius:16px;overflow:hidden;border:1px solid var(--line)}
.prose{max-width:760px;margin:0 auto}
.prose>*+*{margin-top:20px}
.prose h2{font-size:clamp(21px,2.6vw,28px);font-weight:600;margin-top:46px;letter-spacing:-.01em;line-height:1.3}
.prose h3{font-size:19px;font-weight:600;margin-top:32px}
.prose p,.prose li{color:var(--tx-2);font-size:16.5px;line-height:1.85}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.prose a:hover{color:#0a7a6a}
.prose ul,.prose ol{padding-left:22px;display:flex;flex-direction:column;gap:9px}
.prose strong{color:var(--tx);font-weight:600}
.prose blockquote{border-left:3px solid var(--accent);padding:4px 0 4px 18px;color:var(--tx-3)}
.prose code{background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:2px 7px;font-size:.92em;font-family:'Geist',monospace}
.toc{background:var(--bg-card);border:1px solid var(--line);border-radius:14px;padding:20px 24px;margin:30px auto;max-width:760px}
.toc h4{font-size:13px;color:var(--tx-4);text-transform:uppercase;letter-spacing:.1em;margin-bottom:12px}
.toc ol{list-style:none;counter-reset:t;display:flex;flex-direction:column;gap:8px}
.toc li{counter-increment:t;color:var(--tx-3);font-size:14px}
.toc li::before{content:counter(t,decimal-leading-zero);color:var(--accent);font-weight:600;margin-right:10px}
.toc a{color:var(--tx-2)}.toc a:hover{color:var(--accent)}
.callout{background:#fdf4e3;border:1px solid rgba(176,113,10,.32);border-radius:12px;padding:16px 20px;color:var(--tx-2);font-size:14.5px}
.callout strong{color:var(--warn)}
.note-box{background:var(--bg-card);border:1px solid var(--line);border-radius:12px;padding:16px 20px;font-size:14.5px;color:var(--tx-3)}
.cta-inline{background:#eef7f4;border:1px solid rgba(14,155,134,.28);border-radius:16px;padding:24px;margin:36px auto;max-width:760px;text-align:center}
.cta-inline p{color:var(--tx-2);font-size:14px;margin-bottom:14px}
.cta-inline .code-chip{margin:0 6px}
.cta-inline .btn-primary{background:#fff;color:var(--ink);border-color:var(--line-2)}
.cta-inline .btn-primary:hover{background:var(--bg-soft)}

/* 工具页（自建工具壳）*/
.tool-shell{max-width:720px;margin:0 auto;background:var(--bg-card);border:1px solid var(--line);border-radius:18px;padding:26px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--tx-3);margin-bottom:7px}
.field input,.field select{width:100%;background:#fff;border:1px solid var(--line-2);border-radius:10px;
  color:var(--tx);font:inherit;font-size:15px;padding:11px 13px}
.field input:focus,.field select:focus{outline:0;border-color:var(--accent)}
.tool-out{margin-top:18px;background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:18px}
.tool-out .big{font-size:26px;font-weight:600}

/* ---------- 资讯文章流（板块 feed）---------- */
.feed{display:flex;flex-direction:column;gap:14px}
.feed-item{display:block;background:var(--bg-card);border:1px solid var(--line);border-radius:14px;
  padding:22px 24px;transition:border-color .25s,transform .25s,box-shadow .25s}
.feed-item:hover{border-color:var(--line-2);transform:translateY(-2px);box-shadow:0 10px 30px rgba(17,22,29,.08)}
.feed-item .date{font-size:12px;color:var(--tx-4);letter-spacing:.06em;display:flex;gap:10px;align-items:center}
.feed-item .date .k{color:var(--accent);text-transform:uppercase;letter-spacing:.12em;font-size:11px}
.feed-item h3{font-size:clamp(18px,2.2vw,22px);font-weight:600;margin:8px 0 8px;letter-spacing:-.01em}
.feed-item p{color:var(--tx-3);font-size:14.5px;line-height:1.7}
.feed-item .more{display:inline-flex;align-items:center;gap:6px;color:var(--tx);font-size:13px;font-weight:600;margin-top:12px}
.feed-item .more svg{width:15px;height:15px;transition:transform .2s}
.feed-item:hover .more svg{transform:translateX(3px)}
.feed-empty{color:var(--tx-4);font-size:14px;border:1px dashed var(--line-2);border-radius:12px;padding:20px;text-align:center}

/* ---------- 教学分区 ---------- */
.lsec{margin-top:44px}
.lsec:first-of-type{margin-top:0}
.lsec-head{display:flex;align-items:baseline;gap:12px;margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.lsec-head h2{font-size:clamp(20px,2.6vw,26px);font-weight:600;letter-spacing:-.01em}
.lsec-head span{color:var(--tx-4);font-size:13px}

/* ---------- 工具整合目录（分类页）---------- */
.toolset{display:flex;flex-direction:column;gap:14px;margin:6px 0}
.tool{background:var(--bg-card);border:1px solid var(--line);border-radius:14px;padding:20px 22px;transition:border-color .2s,box-shadow .2s}
.tool:hover{border-color:var(--line-2);box-shadow:0 8px 24px rgba(17,22,29,.07)}
.tool .th{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tool .th h3{font-size:18px;font-weight:600}
.ttag{font-size:12px;color:var(--tx-3);background:rgba(17,22,29,.05);border:1px solid var(--line);border-radius:999px;padding:2px 10px}
.ttag.s{color:#0a6e60;background:rgba(14,155,134,.14);border-color:rgba(14,155,134,.32)}
.tool .desc{color:var(--tx-3);font-size:14.5px;margin-top:9px;line-height:1.7}
.tool .rows{margin-top:11px;display:flex;flex-direction:column;gap:6px;font-size:13.5px}
.tool .rows .r{display:flex;gap:10px}
.tool .rows .r b{color:var(--tx-2);font-weight:600;min-width:70px;flex:none}
.tool .rows .r .v{color:var(--tx-3)}
.tool .rows .r .v.risk{color:var(--warn)}
.tool .off{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:13px;font-weight:600;color:var(--accent)}
.tool .off svg{width:14px;height:14px}
.tool .verify{margin-top:12px;font-size:13px;color:var(--tx-4)}
.tool .verify a{color:var(--accent)}

/* ---------- 带侧边栏目录的文章布局 ---------- */
.article-grid{display:flex;flex-direction:column;gap:24px}
.toc-side{order:-1}
.toc-side .toc{margin:0}
.article-col .article-head{max-width:none;margin:0 0 26px}
.article-col .prose{max-width:none;margin:0}
@media(min-width:1100px){
  .article-grid{flex-direction:row;gap:48px;align-items:flex-start}
  .toc-side{order:-1;width:240px;flex:none;position:sticky;top:24px}
  .article-col{flex:1;min-width:0;max-width:820px}
}
.toc-side .toc{font-size:13px}
.toc-side .toc h4{margin-bottom:12px}
.toc-side .toc li{font-size:13px}
.toc-side .toc a{display:inline-block;line-height:1.5}

/* ---------- 首页置顶热读（文字标题链接）---------- */
.topread{display:flex;align-items:center;gap:14px;padding:16px 20px;border:1px solid var(--line);border-radius:14px;background:var(--bg-card);transition:border-color .2s,box-shadow .2s}
.topread:hover{border-color:var(--line-2);box-shadow:0 8px 24px rgba(17,22,29,.07)}
.tr-k{flex:none;font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--accent);border:1px solid rgba(14,155,134,.3);background:rgba(14,155,134,.10);border-radius:999px;padding:3px 11px}
.tr-t{flex:1;min-width:0;font-size:clamp(16px,2vw,20px);font-weight:600;letter-spacing:-.01em;line-height:1.45}
.topread:hover .tr-t{color:var(--accent)}
.tr-arrow{flex:none;width:20px;height:20px;color:var(--tx-3);transition:transform .2s}
.topread:hover .tr-arrow{transform:translateX(3px)}
@media(max-width:560px){.tr-k{display:none}}

/* 杂项 */
.center{text-align:center}
.mt-cta{margin-top:36px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;z-index:99;background:var(--ink);color:#fff;padding:8px 14px;border-radius:8px}

/* ---------- Klariq 纯字标 ---------- */
.brand{gap:3px;font-weight:700;font-size:21px;letter-spacing:-.015em}
.brand .bdot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}