:root{
    --brand:#C84A5A;
    --brand-soft:#E06B78;
    --copper:#D08A48;
    --ink:#121214;
    --bg:#17171A;
    --panel:#222226;
    --panel-2:#29292E;
    --text:#F1EEEE;
    --muted:#A9A3A6;
    --accent:#E59A3A;
    --line:#34343A;
    --success:#85B991;
    --danger:#D77C7C;
    --max:1180px;
    --reading:860px;
    --radius:18px;
    --radius-sm:12px;
    --shadow:0 22px 60px rgba(0,0,0,.24);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--ink)}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;line-height:1.75;font-size:16px;overflow-wrap:anywhere}
body.modal-open{overflow:hidden}
a{color:inherit;text-decoration:none}
a:hover{color:#fff}
img{display:block;max-width:100%;height:auto}
button,input,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 40px),var(--max));margin:0 auto}
.container.narrow{width:min(calc(100% - 40px),var(--reading))}
.skip-link{position:fixed;left:16px;top:-80px;z-index:1000;background:var(--accent);color:#17171A;padding:10px 14px;border-radius:8px;font-weight:700}
.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(18,18,20,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.06)}
.header-inner{min-height:78px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px}
.brand-mark{display:flex;align-items:center;gap:10px;min-width:max-content}
.brand-mark img{width:42px;height:42px;object-fit:contain;border-radius:10px}
.brand-mark span{display:grid;line-height:1.2;gap:3px}
.brand-mark strong{font-size:18px;letter-spacing:.04em}
.brand-mark small{font-size:11px;color:var(--muted)}
.site-nav{display:flex;justify-content:center;gap:6px;min-width:0}
.site-nav a{color:#CBC6C8;padding:8px 9px;border-radius:9px;font-size:14px;white-space:nowrap}
.site-nav a:hover,.site-nav a[aria-current="page"]{background:var(--panel);color:#fff}
.search-open,.menu-toggle{border:1px solid var(--line);background:transparent;color:var(--text);border-radius:10px;padding:8px 13px}
.menu-toggle{display:none}
.search-open:hover,.menu-toggle:hover{border-color:var(--copper);color:#fff}
.search-modal[hidden]{display:none!important}
.search-modal{position:fixed;inset:0;z-index:500;display:grid;place-items:start center;padding:12vh 20px 30px}
.search-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.72);backdrop-filter:blur(6px)}
.search-dialog{position:relative;width:min(680px,100%);background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow)}
.search-dialog h2{margin:4px 0 8px;font-size:30px;line-height:1.25}
.search-dialog p{color:var(--muted);margin:0 0 18px}
.search-close{position:absolute;right:16px;top:14px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--text);font-size:24px;line-height:1}
.search-form label{display:block;font-weight:700;margin:0 0 8px}
.search-row{display:grid;grid-template-columns:1fr auto;gap:10px}
.search-row input{min-width:0;background:#17171A;border:1px solid var(--line);color:#fff;border-radius:10px;padding:13px 14px;outline:none}
.search-row input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(229,154,58,.13)}
.search-row button{border:0;border-radius:10px;background:var(--accent);color:#17171A;padding:0 20px;font-weight:800}
.eyebrow{margin:0 0 10px;color:#EAA85C;font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
h1,h2,h3{margin-top:0;line-height:1.25;letter-spacing:-.025em}
p{margin-top:0}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 18px;border-radius:11px;font-weight:800;border:1px solid transparent;transition:transform .18s ease,border-color .18s ease,background .18s ease}
.button:hover{transform:translateY(-1px)}
.button-primary{background:var(--accent);color:#1B1712}
.button-primary:hover{background:#F1AC53;color:#15110D}
.button-secondary{border-color:var(--line);background:var(--panel);color:var(--text)}
.button-secondary:hover{border-color:var(--copper);background:#29292E}
.text-link{display:inline-flex;color:#F2B56D;font-weight:700;border-bottom:1px solid rgba(242,181,109,.4);padding-bottom:2px}
.text-link:hover{color:#FFD29C;border-color:#FFD29C}
.text-links{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:18px}
.text-links a{color:#E9B06B;text-decoration:underline;text-decoration-color:rgba(233,176,107,.35);text-underline-offset:4px}
.text-links a:hover{color:#FFD39E}
.home-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:radial-gradient(circle at 75% 28%,rgba(200,74,90,.18),transparent 35%),linear-gradient(180deg,#141416,#19191D)}
.home-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(208,138,72,.06),transparent 45%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);gap:64px;align-items:center;min-height:680px;padding:74px 0 76px}
.hero-copy h1{font-size:clamp(40px,5vw,68px);max-width:900px;margin-bottom:22px}
.hero-lead{font-size:19px;color:#C8C2C5;max-width:760px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 30px}
.hero-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:0;max-width:640px}
.hero-facts div{padding:15px 16px;border:1px solid var(--line);border-radius:12px;background:rgba(34,34,38,.62)}
.hero-facts dt{font-size:12px;color:var(--muted);margin-bottom:4px}
.hero-facts dd{margin:0;font-weight:700;font-size:14px}
.hero-visual{margin:0;position:relative}
.hero-visual img{aspect-ratio:1.18/1;object-fit:cover;border-radius:24px;border:1px solid #3A3539;box-shadow:var(--shadow)}
.hero-visual figcaption{position:absolute;left:18px;right:18px;bottom:18px;background:rgba(18,18,20,.84);border:1px solid rgba(255,255,255,.08);border-radius:11px;padding:11px 13px;color:#CFCACC;font-size:13px;backdrop-filter:blur(8px)}
.home-section{padding:88px 0;border-bottom:1px solid rgba(255,255,255,.055)}
.home-section:nth-of-type(even){background:#19191D}
.home-section h2{font-size:clamp(30px,3.6vw,46px);margin-bottom:18px}
.home-section p{color:#BDB7BA}
.intent-strip{background:#151517!important;padding:56px 0}
.intent-list{display:grid;margin-top:28px;border-top:1px solid var(--line)}
.intent-list a{display:grid;grid-template-columns:56px 1.1fr 1fr;gap:18px;align-items:center;padding:21px 4px;border-bottom:1px solid var(--line)}
.intent-list a:hover{background:rgba(255,255,255,.018)}
.intent-list span{color:var(--copper);font-weight:800;font-variant-numeric:tabular-nums}
.intent-list strong{font-size:19px}
.intent-list em{font-style:normal;color:var(--muted);font-size:14px}
.split-reading{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:64px;align-items:center}
.split-reading.reverse{grid-template-columns:minmax(320px,.9fr) minmax(0,1.1fr)}
.split-reading.reverse>div{order:2}.split-reading.reverse>figure{order:1}
.split-reading figure{margin:0}
.split-reading img{width:100%;aspect-ratio:1.42/1;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}
.split-reading p{font-size:17px}
.section-heading{max-width:840px;margin-bottom:34px}
.section-heading.compact h2{max-width:760px}
.relation-rows{border-top:1px solid var(--line)}
.relation-rows a{display:grid;grid-template-columns:190px 1fr 70px;gap:26px;align-items:center;padding:25px 0;border-bottom:1px solid var(--line)}
.relation-rows strong{font-size:20px}
.relation-rows span{color:var(--muted)}
.relation-rows b{font-size:12px;color:#E7A75A;border:1px solid rgba(229,154,58,.35);border-radius:999px;text-align:center;padding:5px 8px}
.app-layout{display:grid;grid-template-columns:minmax(320px,.86fr) minmax(0,1.14fr);gap:68px;align-items:center}
.app-image{margin:0}.app-image img{width:100%;aspect-ratio:1.05/1;object-fit:cover;border-radius:28px 10px 28px 10px;border:1px solid var(--line)}
.app-copy p{font-size:17px}
.check-list{padding:0;margin:20px 0;list-style:none;display:grid;gap:10px}
.check-list li{position:relative;padding-left:26px;color:#D6D1D3}
.check-list li:before{content:"";position:absolute;left:2px;top:.72em;width:9px;height:9px;border-radius:50%;background:var(--copper);box-shadow:0 0 0 4px rgba(208,138,72,.10)}
.check-list a{color:#F0B977;text-decoration:underline;text-underline-offset:4px}
.quick-guide{background:#151517!important}
.steps{padding:0;margin:30px 0 28px;list-style:none;display:grid;gap:0;border-top:1px solid var(--line)}
.steps li{display:grid;grid-template-columns:60px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.steps>li>span{width:42px;height:42px;display:grid;place-items:center;border:1px solid #634B32;border-radius:50%;color:#F4B86F;font-weight:800}
.steps strong{font-size:19px}.steps p{margin:4px 0 0}
.mobile-note-grid{display:grid;grid-template-columns:1fr 360px;gap:60px;align-items:center}
.mobile-note-grid figure{margin:0}.mobile-note-grid img{border-radius:18px;border:1px solid var(--line);aspect-ratio:1.2/1;object-fit:cover}
.submission-light{padding:64px 0;background:#151517!important}
.submission-band{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;padding:30px 0;border-top:1px solid #4B3731;border-bottom:1px solid #4B3731}
.submission-band h2{font-size:32px;margin-bottom:10px}.submission-band p{margin-bottom:0}
.plain-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}
.plain-index a{padding:25px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:138px}
.plain-index strong{display:block;font-size:19px;margin-bottom:7px}.plain-index span{display:block;color:var(--muted);font-size:14px}
.final-path{background:linear-gradient(180deg,#19191D,#131315)!important}
.final-path-inner{text-align:center}.final-path-inner h2{max-width:700px;margin-left:auto;margin-right:auto}
.final-links{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:28px}
.final-links a{padding:10px 14px;border:1px solid var(--line);border-radius:999px;color:#D7D2D4}
.final-links a:hover{border-color:var(--copper);color:#fff}
.article-shell{padding:0 0 90px;background:linear-gradient(180deg,#151517 0,#17171A 460px)}
.article-container{width:min(calc(100% - 40px),1040px)}
.breadcrumbs{display:flex;gap:9px;align-items:center;padding:25px 0 18px;font-size:13px;color:#928C8F}
.breadcrumbs a{color:#C4BFC1}.breadcrumbs a:hover{color:#fff}
.article-header{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(300px,.88fr);gap:54px;align-items:center;padding:34px 0 54px}
.article-copy h1{font-size:clamp(38px,5vw,58px);margin-bottom:18px}
.lead{font-size:18px;color:#C3BDC0;max-width:760px}
.article-visual{margin:0}.article-visual img{width:100%;aspect-ratio:1.25/1;object-fit:cover;border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow)}
.article-section{width:min(100%,820px);margin:0 auto;padding:48px 0;border-top:1px solid var(--line)}
.article-section h2{font-size:30px;margin-bottom:18px}
.article-section p{color:#C6C0C3;font-size:17px}
.article-section.section-muted{position:relative}
.article-section.section-muted:before{content:"";position:absolute;left:-28px;top:40px;bottom:40px;width:3px;background:linear-gradient(var(--brand),var(--copper));border-radius:999px}
.article-next{margin:64px auto 0;width:min(100%,940px);padding:34px;border:1px solid var(--line);border-radius:20px;background:#1D1D21}
.article-next h2{font-size:28px;margin-bottom:22px}
.next-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.next-link{display:block;padding:18px;border:1px solid var(--line);border-radius:12px;background:#202024}
.next-link:hover{border-color:#685039;background:#252529}
.next-link strong{display:block;margin-bottom:5px}.next-link span{display:block;color:var(--muted);font-size:13px}
.faq-stack{display:grid;gap:10px}.faq-item{border:1px solid var(--line);border-radius:12px;background:#1D1D21;overflow:hidden}
.faq-item summary{cursor:pointer;padding:17px 18px;font-weight:800;list-style:none}.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";float:right;color:var(--copper);font-size:22px;line-height:1}
.faq-item[open] summary:after{content:"−"}.faq-answer{padding:0 18px 18px}.faq-answer p{margin:0}
.submission-form-section{margin-top:10px}.submission-form{display:grid;gap:18px;margin-top:20px}
.submission-form label{display:grid;gap:8px;font-weight:700}.submission-form input[type="text"],.submission-form textarea{width:100%;background:#141416;border:1px solid var(--line);border-radius:10px;color:#fff;padding:12px 13px;outline:none}
.submission-form input:focus,.submission-form textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(229,154,58,.11)}
.submission-form .consent{display:flex;grid-template-columns:auto 1fr;align-items:flex-start;gap:10px;font-weight:400;color:#C8C2C5}
.submission-form .consent input{margin-top:7px}
.submission-form .button{justify-self:start}
.form-note{margin-top:18px;padding:16px 18px;border-radius:12px;border:1px solid var(--line)}.form-note p{margin:4px 0 0;font-size:15px}
.success-note{border-color:rgba(133,185,145,.35);background:rgba(133,185,145,.08)}.error-note{border-color:rgba(215,124,124,.35);background:rgba(215,124,124,.08)}
.search-page{padding-bottom:90px;min-height:70vh}.search-page-header{padding:36px 0 24px}.search-page-header h1{font-size:clamp(38px,5vw,56px);margin-bottom:14px}.search-page-header p{color:var(--muted)}
.page-search{padding:22px;background:var(--panel);border:1px solid var(--line);border-radius:14px}
.search-state,.search-results{padding:44px 0}.search-state h2,.search-results>h2{font-size:28px}.tag-links{display:flex;flex-wrap:wrap;gap:10px}.tag-links a{padding:8px 14px;border-radius:999px;border:1px solid var(--line);color:#E8B06B}
.search-results{display:grid;gap:14px}.search-results>h2{margin-bottom:8px}.search-results article{padding:22px;border:1px solid var(--line);border-radius:14px;background:#1D1D21}.search-results h3{font-size:21px;margin-bottom:8px}.search-results p{color:var(--muted);margin-bottom:10px}
.error-page{min-height:72vh;display:grid;align-items:center;padding:80px 0}.error-card{text-align:center;padding:54px 20px}.error-code{font-size:86px;line-height:1;font-weight:900;color:var(--brand);margin-bottom:16px}.error-card h1{font-size:42px}.error-card>p:not(.error-code){color:var(--muted);max-width:700px;margin:0 auto 24px}.error-card .hero-actions,.error-card .text-links{justify-content:center}
.site-footer{background:#111113;border-top:1px solid var(--line);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:70px;align-items:start}.footer-about h2{font-size:28px;margin-bottom:12px}.footer-about p{color:var(--muted);max-width:650px}.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 24px}.footer-links a{padding:8px 0;border-bottom:1px solid #29292D;color:#C8C3C5}.footer-links a:hover{color:#fff;border-color:#5A4640}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:28px;margin-top:38px;border-top:1px solid #29292D;color:#777176;font-size:13px}.footer-bottom p{margin:0}
.back-top{position:fixed;right:20px;bottom:20px;z-index:90;width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:#232327;color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.back-top:hover{border-color:var(--copper)}
@media (max-width:1100px){
    .header-inner{grid-template-columns:auto auto 1fr auto}.menu-toggle{display:inline-flex;grid-column:2}.site-nav{display:none;position:absolute;top:78px;left:20px;right:20px;background:#1C1C20;border:1px solid var(--line);border-radius:14px;padding:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.site-nav.is-open{display:flex}.site-nav a{padding:11px 12px}.search-open{grid-column:4}
    .hero-grid{grid-template-columns:1fr 420px;gap:38px}.hero-copy h1{font-size:48px}.article-header{grid-template-columns:1fr 360px;gap:36px}
}
@media (max-width:900px){
    .hero-grid,.split-reading,.split-reading.reverse,.app-layout,.article-header{grid-template-columns:1fr}.hero-grid{padding:56px 0;min-height:auto}.hero-visual{max-width:680px}.split-reading.reverse>div,.split-reading.reverse>figure{order:initial}.app-image{max-width:620px}.article-visual{max-width:640px}.article-header{padding-top:24px}.mobile-note-grid{grid-template-columns:1fr 300px;gap:34px}.next-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr;gap:36px}
}
@media (max-width:700px){
    body{font-size:15px}.container,.container.narrow,.article-container{width:min(calc(100% - 28px),var(--max))}.header-inner{min-height:68px;gap:10px}.site-nav{top:68px;left:14px;right:14px}.brand-mark small{display:none}.brand-mark img{width:36px;height:36px}.menu-toggle,.search-open{padding:7px 10px;font-size:13px}
    .home-section{padding:62px 0}.hero-grid{padding:45px 0 52px}.hero-copy h1{font-size:39px}.hero-lead{font-size:17px}.hero-facts{grid-template-columns:1fr}.hero-actions{align-items:stretch}.hero-actions .button{flex:1 1 100%}
    .intent-list a{grid-template-columns:44px 1fr;gap:12px}.intent-list em{grid-column:2}.relation-rows a{grid-template-columns:1fr auto;gap:8px 14px}.relation-rows span{grid-column:1 / -1;grid-row:2}.relation-rows b{grid-column:2;grid-row:1}.mobile-note-grid{grid-template-columns:1fr}.mobile-note-grid figure{max-width:520px}.submission-band{grid-template-columns:1fr;gap:20px}.plain-index{grid-template-columns:1fr}.article-header{gap:28px}.article-copy h1{font-size:39px}.article-section{padding:38px 0}.article-section.section-muted:before{left:-10px}.article-next{padding:24px}.next-grid{grid-template-columns:1fr}.footer-links{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column}.search-dialog{padding:24px 18px}.search-row{grid-template-columns:1fr}.search-row button{min-height:44px}
}
@media (max-width:420px){
    .brand-mark span strong{font-size:16px}.header-inner{grid-template-columns:auto auto auto;justify-content:space-between}.brand-mark{min-width:0}.menu-toggle{grid-column:2}.search-open{grid-column:3}.hero-copy h1,.article-copy h1{font-size:34px}.home-section h2{font-size:29px}.article-section h2{font-size:27px}.hero-visual figcaption{position:static;margin-top:10px}.footer-links{grid-template-columns:1fr}.final-links{display:grid}.final-links a{border-radius:10px}
}