/* Clash · 分流蓝图 · 规则手册(技术文档/瑞士排版) */
:root{
--paper:#FBFAF7;--paper-2:#F1EFE8;--panel:#FFFFFF;
--ink:#17211A;--ink-soft:#3D4A41;--muted:#7C857E;
--line:#E3E0D6;--line-2:#D4D0C4;
--main:#1C9E5C;--main-dark:#0F7A43;--grad:linear-gradient(135deg,#1C9E5C,#2FBF71);
--copper:#C08A3E;
--proxy:#1C9E5C;--direct:#3E7CB1;--dns:#C08A3E;--reject:#C0553A;
--mono:"SF Mono","Cascadia Code","Consolas","Liberation Mono",Menlo,monospace;
--shadow:0 1px 0 rgba(23,33,26,.05),0 14px 34px rgba(23,33,26,.09);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background-color:var(--paper);background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:48px 48px;line-height:1.75;font-size:16px}
a{color:var(--main-dark);text-decoration:none}
a:hover{color:var(--main)}
img{max-width:100%;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 28px}
.ico{width:20px;height:20px;flex:none}
h1,h2,h3{line-height:1.2;font-weight:800;letter-spacing:-.01em}
.mono{font-family:var(--mono)}

/* ===== 顶部编号导航 ===== */
.bar{position:sticky;top:0;z-index:90;background:rgba(251,250,247,.96);border-bottom:1px solid var(--line-2)}
.bar-in{max-width:1120px;margin:0 auto;padding:0 28px;display:flex;align-items:center;gap:26px;height:66px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);flex:none}
.logo img{width:34px;height:34px;border-radius:7px}
.wordmark{display:flex;flex-direction:column;line-height:1.1}
.wordmark b{font-size:18px;letter-spacing:.5px}
.wordmark i{font-size:11px;color:var(--muted);font-style:normal}
.menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.menu-item{display:inline-flex;align-items:baseline;gap:6px;padding:8px 13px;font-size:14.5px;font-weight:700;color:var(--ink-soft);border-radius:4px;transition:.16s}
.menu-item i{font-family:var(--mono);font-size:11px;color:var(--muted);font-style:normal;letter-spacing:.02em}
.menu-item:hover{color:var(--main-dark);background:var(--paper-2)}
.menu-item.on{color:var(--main-dark);background:var(--paper-2)}
.menu-item.on i{color:var(--main)}
.bar-cta{flex:none}

/* ===== 按钮(直角印章) ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;padding:12px 22px;border-radius:4px;font-size:15px;transition:.16s;border:1px solid transparent;cursor:pointer;white-space:nowrap}
.btn .ico{width:17px;height:17px}
.btn-main{background:var(--main);color:#fff;box-shadow:0 2px 0 var(--main-dark)}
.btn-main:hover{background:var(--main-dark);color:#fff}
.btn-ghost{background:transparent;color:var(--main-dark);border:1px solid var(--line-2)}
.btn-ghost:hover{border-color:var(--main);color:var(--main)}
.btn-big{padding:15px 28px;font-size:16px}

/* ===== hero 超大排版 + 桑基图 ===== */
.hero{position:relative;padding:84px 0 100px}
.hero-in{display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center}
.hero-txt .kicker{font-family:var(--mono);font-size:13px;color:var(--main-dark);letter-spacing:.03em;margin-bottom:18px}
.hero-title{font-size:116px;line-height:.94;letter-spacing:-.035em;font-weight:900;margin:0 0 10px}
.hero-line{font-size:32px;font-weight:800;letter-spacing:-.01em;margin-bottom:20px;color:var(--ink);line-height:1.3}
.hero-sub{font-size:16px;color:var(--ink-soft);max-width:520px;margin:0 0 26px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin-bottom:22px}
.hero-feats{display:flex;flex-wrap:wrap;gap:10px 26px;list-style:none}
.hero-feats li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--ink-soft);font-weight:600}
.hero-feats .ico{width:18px;height:18px;color:var(--main)}
.hero-flow .svgflow{width:100%;height:auto}

/* ===== 区块 ===== */
.section{padding:68px 0}
.sec-head{max-width:660px;margin:0 auto 42px}
.sec-head h2{font-size:32px;margin-bottom:10px;position:relative;padding-left:18px}
.sec-head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:6px;height:28px;background:var(--main)}
.sec-head p{color:var(--ink-soft);font-size:15.5px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split.rev .split-media{order:-1}
.split-txt h2{font-size:30px;margin-bottom:14px;padding-left:16px;border-left:4px solid var(--main)}
.split-txt p{color:var(--ink-soft);margin-bottom:14px}
.ticklist{list-style:none;margin-top:8px}
.ticklist li{display:flex;align-items:center;gap:9px;padding:7px 0;color:var(--ink);font-weight:500}
.ticklist .ico{width:18px;height:18px;color:var(--main)}

/* ===== 代码块 ===== */
.code-card{border:1px solid var(--line-2);border-radius:8px;overflow:hidden;background:var(--panel);box-shadow:var(--shadow)}
.code-head{display:flex;align-items:center;gap:6px;padding:11px 16px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:12.5px;color:var(--muted);background:var(--paper-2)}
.code-head .dot{width:11px;height:11px;border-radius:50%;background:var(--line-2)}
.code-head .dot:first-child{background:#E2A0A0}
.code-head .dot:nth-child(2){background:#E0C98A}
.code-head .dot:nth-child(3){background:#A0C0A0}
.code-head em{font-style:normal;margin-left:6px;letter-spacing:.02em}
.code{margin:0;padding:16px 0;overflow-x:auto;font-family:var(--mono);font-size:13.5px;line-height:1.9;color:var(--ink-soft)}
.code code{display:block;white-space:pre}
.code .ln{display:inline-block;width:2.4em;color:var(--line-2);text-align:right;margin-right:1.1em;-webkit-user-select:none;user-select:none}
.code .k{color:var(--main-dark);font-weight:700}
.code .v{color:var(--copper);font-weight:600}
.code .c{color:var(--muted)}
.code .a-proxy{color:var(--proxy);font-weight:700}
.code .a-direct{color:var(--direct);font-weight:700}
.code .a-reject{color:var(--reject);font-weight:700}

/* ===== 规则数据表 ===== */
.rule-wrap{max-width:760px;margin:0 auto}
.rule-table{width:100%;border-collapse:collapse;border:1px solid var(--line-2);font-size:14.5px;background:var(--panel)}
.rule-table th{background:var(--ink);color:#fff;font-weight:700;text-align:left;padding:13px 20px;font-size:13px;letter-spacing:.05em}
.rule-table td{padding:13px 20px;border-bottom:1px solid var(--line)}
.rule-table tbody tr:last-child td{border-bottom:none}
.rule-table tbody tr:nth-child(even){background:var(--paper-2)}
.rule-table code{font-family:var(--mono);font-size:13px;color:var(--ink-soft)}
.tag{display:inline-block;padding:3px 13px;border-radius:3px;font-size:12.5px;font-weight:700;font-family:var(--mono)}
.tag-proxy{background:rgba(28,158,92,.12);color:var(--proxy);border:1px solid rgba(28,158,92,.4)}
.tag-direct{background:rgba(62,124,177,.12);color:var(--direct);border:1px solid rgba(62,124,177,.4)}
.tag-reject{background:rgba(192,85,58,.12);color:var(--reject);border:1px solid rgba(192,85,58,.4)}

/* ===== 清单行(平台/下载) ===== */
.list-rows{border-top:1px solid var(--line-2)}
.list-row{display:flex;align-items:center;gap:20px;padding:22px 8px;border-bottom:1px solid var(--line)}
.list-row .num{font-family:var(--mono);font-size:14px;color:var(--muted);width:2.2em;flex:none}
.list-row .ico{width:26px;height:26px;color:var(--main);flex:none}
.lr-txt{flex:1;min-width:0}
.lr-txt strong{font-size:16.5px;display:block}
.lr-txt p{color:var(--muted);font-size:13.5px}
.lr-go{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--main-dark);font-size:14px;flex:none}
.lr-go .ico{width:16px;height:16px}
.lr-go:hover{color:var(--main)}
.lr-thumb{width:58px;height:58px;border-radius:4px;object-fit:cover;flex:none;border:1px solid var(--line)}
.dl-list{border-top:1px solid var(--line-2)}
.list-row.dl{padding:16px 8px}
.list-row.dl .btn{flex:none}

/* ===== 对比卡(编号) ===== */
.cmp-row{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cmp-card{border:1px solid var(--line);border-left:3px solid var(--main);background:var(--panel);padding:28px;transition:.16s}
.cmp-card:hover{border-color:var(--line-2);box-shadow:var(--shadow)}
.cmp-card .num{font-family:var(--mono);font-size:13px;color:var(--main-dark);display:block;margin-bottom:14px}
.cmp-card .ico{width:26px;height:26px;color:var(--copper);margin-bottom:12px}
.cmp-card strong{font-size:17px;display:block;margin-bottom:8px}
.cmp-card p{color:var(--ink-soft);font-size:14px}

/* ===== 图鉴目录(编号 + 缩略图) ===== */
.catalog{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.cat-item{display:flex;gap:18px;align-items:center;border:1px solid var(--line);padding:14px;background:var(--panel);transition:.16s}
.cat-item:hover{border-color:var(--line-2);box-shadow:var(--shadow)}
.cat-item .num{font-family:var(--mono);font-size:15px;color:var(--main-dark);flex:none;width:1.8em}
.cat-item img{width:74px;height:74px;border-radius:4px;object-fit:cover;flex:none;border:1px solid var(--line)}
.cat-txt strong{font-size:16px;display:block}
.cat-txt p{color:var(--muted);font-size:13px}

/* ===== 图注 figure ===== */
.figure{border:1px solid var(--line-2);background:var(--panel);padding:12px 12px 0;box-shadow:var(--shadow)}
.figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.figure figcaption{padding:11px 4px 13px;font-size:13px;color:var(--muted);font-family:var(--mono)}
.figure .num{color:var(--main-dark);font-weight:700;margin-right:8px}

/* ===== FAQ / CTA ===== */
.faq-list{max-width:760px;margin:0 auto}
.faq-item{border:1px solid var(--line);background:var(--panel);margin-bottom:0;border-bottom-width:0}
.faq-item:last-child{border-bottom-width:1px}
.faq-item summary{cursor:pointer;padding:17px 22px;font-weight:700;list-style:none;position:relative;padding-right:48px;color:var(--ink)}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;color:var(--main)}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding:0 22px 18px;color:var(--ink-soft)}
.faq-more{text-align:center;margin-top:26px}

.cta-sec{padding-bottom:84px}
.cta-card{background:var(--ink);color:#fff;padding:52px 50px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;border-radius:8px;position:relative;overflow:hidden}
.cta-card::after{content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;border:2px dashed rgba(47,191,113,.4);border-radius:50%}
.cta-txt{position:relative;z-index:1}
.cta-txt h2{font-size:30px;color:#fff}
.cta-txt p{opacity:.78;margin-top:6px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}
.cta-card .btn-main{background:var(--main);color:#fff;box-shadow:0 2px 0 var(--main-dark)}
.cta-card .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.cta-card .btn-ghost:hover{border-color:#fff;color:#fff}

/* ===== 页脚(书封底) ===== */
.foot{border-top:1px solid var(--line-2);background:var(--ink);color:#B9C4BC;margin-top:0}
.foot a{color:#B9C4BC}
.foot a:hover{color:#fff}
.foot .logo{color:#fff}
.foot .wordmark i{color:#8A958D}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;padding:56px 28px 42px}
.foot-brand p{color:#8A958D;font-size:13.5px;margin-top:12px;max-width:300px}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.foot-col a{display:block;font-size:14px;padding:5px 0;color:#A9B4AC}
.foot-out{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;text-align:center;font-size:13px;color:#8A958D}
.foot-out a{color:#B9C4BC;margin:0 8px}
.foot-copy{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;text-align:center;font-size:13px;color:#8A958D}

/* ===== 内页 ===== */
.sub-hero{border-bottom:1px solid var(--line-2);background:var(--paper-2);padding:60px 28px 52px;text-align:center}
.sub-hero h1{font-size:40px;margin-bottom:10px}
.sub-hero h1 span{display:block;font-size:20px;color:var(--main-dark);margin-top:8px;font-weight:700}
.sub-hero p{color:var(--ink-soft);max-width:640px;margin:0 auto 20px;font-size:16px}
.sub-hero .hero-actions{flex-direction:row;justify-content:center;margin:14px auto 0}
.crumb{text-align:center;font-size:13px;color:var(--muted);margin-bottom:14px;font-family:var(--mono)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--main-dark)}

/* ===== 步骤 / 表格 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{border:1px solid var(--line);border-top:3px solid var(--main);background:var(--panel);padding:28px;position:relative}
.step em{display:inline-flex;width:40px;height:40px;align-items:center;justify-content:center;background:var(--ink);color:#fff;font-family:var(--mono);font-style:normal;font-weight:700;font-size:16px;margin-bottom:14px}
.step h3{font-size:17px;margin-bottom:6px}
.step p{color:var(--ink-soft);font-size:13.5px}

.spec-table,.cmp-table{width:100%;border-collapse:collapse;border:1px solid var(--line-2);font-size:14.5px;background:var(--panel)}
.spec-table th,.cmp-table th{background:var(--ink);color:#fff;text-align:left;padding:13px 20px;font-weight:700}
.spec-table td,.cmp-table td{padding:13px 20px;border-bottom:1px solid var(--line);text-align:left}
.spec-table tr:last-child td,.cmp-table tr:last-child td{border-bottom:none}
.cmp-table th,.cmp-table td{text-align:center}
.cmp-table td:first-child{text-align:left;font-weight:600}
.cmp-table tr:nth-child(even){background:var(--paper-2)}

.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.contact-card{border:1px solid var(--line);background:var(--panel);padding:28px;border-left:3px solid var(--main)}
.contact-card .ico{width:28px;height:28px;color:var(--main);margin-bottom:14px}
.contact-card h3{font-size:18px;margin-bottom:8px}
.contact-card p{color:var(--ink-soft);font-size:14.5px}

.prose{max-width:760px;margin:0 auto}
.prose h2{font-size:26px;margin:30px 0 12px;padding-left:12px;border-left:3px solid var(--main)}
.prose h3{font-size:20px;margin:22px 0 10px}
.prose p{color:var(--ink-soft);margin-bottom:14px;font-size:15.5px}
.prose ul,.prose ol{margin:0 0 16px 22px;color:var(--ink-soft)}
.prose li{margin-bottom:7px}
.sitemap-list{list-style:none;border-top:1px solid var(--line-2)}
.sitemap-list li{padding:12px 4px;border-bottom:1px solid var(--line)}
.sitemap-list a{font-size:16px;font-weight:600}

.searchbox{display:flex;gap:12px;max-width:560px;margin:0 auto 30px}
.searchbox input{flex:1;border:1px solid var(--line-2);border-radius:4px;padding:12px 18px;font-size:15px;outline:none;background:var(--panel);color:var(--ink)}
.searchbox input:focus{border-color:var(--main)}
.search-results a{display:block;background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--main);padding:16px 20px;margin-bottom:12px;color:var(--ink)}
.search-results a strong{color:var(--main-dark)}

/* ===== 文章 ===== */
.art-hero{text-align:left;padding:48px 28px 42px}
.art-hero .crumb{text-align:left;margin-bottom:12px}
.art-hero h1{font-size:34px;margin-bottom:12px;line-height:1.3}
.art-lead{font-size:17px;color:var(--ink-soft);max-width:760px;margin:0}
.art-wrap{display:grid;grid-template-columns:230px 1fr;gap:44px;align-items:start}
.art-side{position:sticky;top:92px}
.toc{border:1px solid var(--line);border-left:3px solid var(--main);padding:16px 18px;font-size:14px;background:var(--panel)}
.toc strong{display:block;font-size:15px;margin-bottom:10px;color:var(--ink);font-family:var(--mono)}
.toc a{display:block;padding:6px 0;color:var(--ink-soft);border-bottom:1px dashed var(--line)}
.toc a:last-child{border-bottom:none}
.toc a:hover{color:var(--main-dark)}
.art-body{max-width:760px}
.art-body h2{font-size:24px;margin:30px 0 12px;padding-left:12px;border-left:3px solid var(--main)}
.art-body p{color:var(--ink-soft);margin-bottom:14px;font-size:16px;line-height:1.85}
.art-body img{border:1px solid var(--line-2);padding:8px;background:var(--panel)}
.art-body img:first-of-type{width:100%;aspect-ratio:16/9;object-fit:cover}
.art-conclusion{background:var(--paper-2);border-left:3px solid var(--main);padding:16px 20px;margin:28px 0}
.art-conclusion strong{color:var(--main-dark)}
.art-conclusion p{color:var(--ink);margin-top:6px}
.art-cta{background:var(--ink);color:#fff;border-radius:8px;padding:28px;text-align:center;margin:26px 0}
.art-cta p{color:#fff;margin-bottom:12px;font-size:16px}
.art-cta .btn-main{background:var(--main);color:#fff;box-shadow:0 2px 0 var(--main-dark)}
.rel-block{margin-top:34px}
.rel-block h3{font-size:20px;margin-bottom:14px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rel-card{background:var(--panel);border:1px solid var(--line);border-top:2px solid var(--main);padding:14px 16px;display:flex;flex-direction:column;gap:6px;color:var(--ink)}
.rel-card span{font-weight:700}
.rel-card em{font-size:13px;color:var(--main);font-style:normal}

.backtop{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:4px;background:var(--ink);color:#fff;border:none;font-size:20px;cursor:pointer;opacity:0;pointer-events:none;transition:.3s;z-index:95}
.backtop.show{opacity:1;pointer-events:auto}

@media(max-width:960px){
.hero-in{grid-template-columns:1fr;gap:40px}
.hero-title{font-size:78px}
.hero-flow{order:-1}
.split,.split.rev{grid-template-columns:1fr}
.cmp-row,.steps,.contact-grid,.catalog{grid-template-columns:1fr 1fr}
.foot-grid{grid-template-columns:1fr 1fr}
.art-wrap{grid-template-columns:1fr}
.art-side{position:static}
.menu{overflow-x:auto}
.bar-in{flex-wrap:nowrap}
}
@media(max-width:560px){
.hero-title{font-size:58px}
.hero-line{font-size:24px}
.cmp-row,.steps,.contact-grid,.catalog,.rel-grid{grid-template-columns:1fr}
.sec-head h2{font-size:26px}
.bar-in{flex-wrap:wrap;height:auto;padding:10px 16px;gap:8px}
.menu{order:3;width:100%;margin-left:0}
.menu-item{padding:7px 10px}
.bar-cta{margin-left:0}
}