:root {
    --bg: #E6E2DA;
    --bg-deep: #D4CFC6;
    --surface: #F4F1EA;
    --surface-2: #EBE7DF;
    --ink: #2C2A28;
    --text: #3A3732;
    --muted: #6A645C;
    --soft: #8A847A;
    --elephant: #B8B3A8;
    --moss: #6A7A58;
    --clay: #A65A3A;
    --border: rgba(44,42,40,.14);
    --accent-border: rgba(166,90,58,.36);
    --shadow: 0 12px 28px rgba(44,42,40,.08);
    --max: 980px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body { margin: 0; color: var(--text); background: var(--bg); font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif; font-size: 15px; line-height: 1.7; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
button,input { font: inherit; }
button { color: inherit; }
img { display: block; max-width: 100%; }
.skip-link { position: fixed; left: 12px; top: -80px; z-index: 1200; background: var(--surface); color: var(--ink); padding: 8px 12px; border-radius: 6px; }
.skip-link:focus { top: 8px; }
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 900; box-shadow: 0 1px 0 var(--border); }
.xiangxun { height: 20px; background: var(--ink); color: var(--surface); font-size: 12px; line-height: 20px; }
.top-inner,.head-inner,.step-inner { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.top-inner { display: flex; align-items: center; justify-content: space-between; height: 20px; }
.plain-trigger { border: 0; padding: 0 2px; background: transparent; color: var(--surface); min-width: 44px; height: 20px; cursor: pointer; }
.xiange { height: 54px; background: var(--elephant); border-bottom: 1px solid rgba(44,42,40,.22); }
.head-inner { height: 54px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand-link { display: inline-flex; align-items: center; min-height: 44px; font-size: 16px; font-weight: 700; color: var(--ink); }
.brand-link img,.drawer-brand img,.footer-brand img { height: 24px; width: auto; max-width: 180px; object-fit: contain; object-position: center; }
.head-actions { display: flex; align-items: center; gap: 8px; }
.head-app,.drawer-trigger { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; white-space: nowrap; }
.head-app { padding: 0 12px; border: 1px solid rgba(44,42,40,.22); border-radius: 8px; background: rgba(244,241,234,.46); font-size: 13px; }
.drawer-trigger { min-width: 56px; border: 0; border-radius: 8px; background: var(--ink); color: var(--surface); cursor: pointer; font-size: 13px; }
.xiangbu { height: 46px; background: var(--surface); border-bottom: 1px solid var(--border); }
.step-inner { display: flex; align-items: stretch; justify-content: flex-start; height: 46px; gap: 28px; }
.step-link { position: relative; display: inline-flex; align-items: center; gap: 7px; height: 46px; color: var(--ink); font-size: 13px; }
.step-link span { color: var(--clay); font-size: 12px; font-variant-numeric: tabular-nums; }
.step-link.is-active::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--clay); }
.step-link.is-active span { color: var(--ink); }
.site-main { min-height: 60vh; padding-top: 120px; }
.page-wrap,.home-wrap { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.section { padding: 48px 0; }
.section + .section { border-top: 1px solid var(--border); }
.eyebrow { display: inline-block; color: var(--clay); font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.big-number { font-size: clamp(42px,8vw,76px); line-height: 1; font-weight: 800; color: rgba(44,42,40,.13); }
h1,h2,h3 { color: var(--ink); margin: 0 0 12px; line-height: 1.3; }
h1 { font-size: 24px; }
h2 { font-size: 20px; }
h3 { font-size: 16px; }
p { margin: 0 0 14px; }
.lead { font-size: 17px; line-height: 1.65; color: var(--ink); }
.intro-copy { max-width: 760px; color: var(--muted); }
.button-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.btn { min-height: 42px; padding: 0 16px; display: inline-flex; align-items: center; justify-content: center; border-radius: 8px; font-size: 14px; white-space: nowrap; border: 1px solid transparent; }
.btn-primary { color: var(--surface); background: linear-gradient(135deg,#B8B3A8 0%,#2C2A28 100%); }
.btn-secondary { color: var(--ink); background: var(--surface); border-color: var(--clay); }
a:hover,.plain-trigger:hover,.drawer-trigger:hover,.icon-button:hover { opacity: .86; }
a:focus-visible,button:focus-visible,input:focus-visible { outline: 3px solid rgba(166,90,58,.38); outline-offset: 2px; }
.media-slot { min-height: 110px; display: flex; align-items: center; justify-content: center; background: var(--elephant); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.media-slot img { width: 100%; height: 100%; object-fit: contain; object-position: center; }
.frame-wide { width: 100%; height: 180px; }
.frame-tall { height: min(320px, 52vw); min-height: 220px; }
.frame-about { height: 200px; }
.frame-card { height: 150px; }
.frame-small { height: 112px; }
.home-intro { padding-top: 54px; }
.home-intro .big-number { margin-bottom: 10px; }
.home-intro .lead { max-width: 640px; font-size: 21px; }
.home-intro .intro-copy { margin-top: 12px; }
.steps-list { display: grid; gap: 14px; }
.step-card { display: grid; grid-template-columns: 54px 1fr; gap: 12px; padding: 18px 0; border-bottom: 1px solid var(--border); }
.step-card:last-child { border-bottom: 0; }
.step-card .num { color: var(--clay); font-size: 13px; font-weight: 800; padding-top: 3px; }
.step-content.with-media { display: grid; grid-template-columns: minmax(0,1fr) 260px; gap: 22px; align-items: center; }
.quote-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.quote-block { background: var(--surface); border-left: 4px solid var(--moss); padding: 22px; border-radius: 0 8px 8px 0; }
.quote-block .media-slot { margin-bottom: 16px; }
.card-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.info-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: 9px; padding: 20px; box-shadow: var(--shadow); }
.info-card .media-slot { margin-bottom: 16px; }
.triple-period { display: grid; gap: 10px; }
.period-row { display: grid; grid-template-columns: 100px 1fr; gap: 18px; padding: 15px 0; border-bottom: 1px solid var(--border); }
.period-row strong { color: var(--ink); }
.status-list { display: grid; gap: 12px; }
.status-item { display: grid; grid-template-columns: 98px 1fr; gap: 14px; align-items: start; padding: 16px 18px; border-radius: 8px; background: var(--surface); border: 1px solid var(--border); }
.status-item b { color: var(--moss); }
.product-split { display: grid; grid-template-columns: 360px 1fr; gap: 32px; align-items: center; }
.app-icon-row { display: flex; align-items: center; gap: 14px; margin: 16px 0; }
.icon-slot { width: 58px; height: 58px; flex: 0 0 58px; min-height: 58px; border-radius: 10px; }
.method-list { display: grid; gap: 18px; counter-reset: method; }
.method-item { position: relative; padding: 18px 18px 18px 68px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; }
.method-item::before { counter-increment: method; content: "0" counter(method); position: absolute; left: 18px; top: 18px; color: var(--clay); font-weight: 800; }
.faq-mini { display: grid; gap: 12px; }
.faq-mini details { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; }
.faq-mini summary { cursor: pointer; color: var(--ink); font-weight: 700; }
.faq-mini details p { margin-top: 10px; color: var(--muted); }
.brand-note { background: var(--ink); color: var(--surface); padding: 26px; border-radius: 10px; }
.brand-note h2,.brand-note h3 { color: var(--surface); }
.brand-note p { color: #E6E2DA; }

.page-hero { padding: 48px 0 28px; }
.page-hero.compact { padding-bottom: 18px; }
.page-hero .intro-copy { max-width: 780px; }
.numbered-intro { display: grid; grid-template-columns: 90px 1fr; gap: 26px; align-items: start; }
.page-static-frame { margin: 12px 0 34px; }
.vertical-flow { display: grid; gap: 0; }
.vertical-flow article { padding: 24px 0; border-top: 1px solid var(--border); }
.vertical-flow article:first-child { border-top: 0; }
.vertical-flow .flow-row { display: grid; grid-template-columns: 78px 1fr; gap: 18px; }
.vertical-flow .flow-row > span { color: var(--clay); font-weight: 800; }
.quote-page { display: grid; gap: 18px; }
.quote-page blockquote { margin: 0; padding: 24px 26px; background: var(--surface); border-left: 5px solid var(--moss); border-radius: 0 10px 10px 0; color: var(--ink); }
.quote-page blockquote p:last-child { margin-bottom: 0; }
.single-explain { max-width: 760px; margin: 0 auto; }
.single-explain article { padding: 22px 0; border-bottom: 1px solid var(--border); }
.memo-list { display: grid; gap: 12px; }
.memo-item { padding: 18px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; }
.topic-list { display: grid; gap: 14px; }
.topic-row { display: grid; grid-template-columns: minmax(0,1fr) 190px; gap: 24px; align-items: start; padding: 22px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; }
.topic-row .topic-meta { color: var(--muted); font-size: 13px; }
.center-card { max-width: 760px; margin: 24px auto; text-align: center; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 30px; box-shadow: var(--shadow); }
.center-card + .center-card { margin-top: 16px; }
.policy-sections { display: grid; gap: 14px; }
.policy-sections section { padding: 22px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; }
.help-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }
.help-box { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 20px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 20px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; }
.faq-item h2 { font-size: 16px; }
.contact-paths { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.contact-card { padding: 22px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; }
.notice { padding: 16px 18px; border: 1px solid var(--accent-border); background: #F3E8E1; color: var(--ink); border-radius: 8px; }
.small-note { font-size: 13px; color: var(--muted); }

.site-footer { background: #241F1C; color: #E6E2DA; border-top: 1px solid rgba(184,179,168,.35); font-size: 13px; }
.footer-inner { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; padding: 34px 0 30px; }
.footer-brand a { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; padding-bottom: 22px; border-bottom: 1px solid rgba(230,226,218,.14); }
.footer-brand strong { font-size: 16px; color: #F4F1EA; }
.footer-brand span { color: #B8B3A8; }
.footer-groups { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; padding: 24px 0; }
.footer-groups h2 { font-size: 13px; color: #F4F1EA; margin-bottom: 8px; }
.footer-groups a { display: block; color: #E6E2DA; padding: 3px 0; }
.rights-note { color: #CFC8BE; max-width: 820px; }
.copyright { color: #AFA79D; margin-bottom: 0; }
.overlay { position: fixed; inset: 0; z-index: 990; background: rgba(36,31,28,.42); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .2s ease, visibility .2s ease; }
.overlay.is-visible { opacity: 1; visibility: visible; }
.site-drawer { position: fixed; inset: 0 auto 0 0; z-index: 1010; width: 320px; max-width: 86vw; background: var(--surface); color: var(--text); transform: translateX(-103%); visibility: hidden; pointer-events: none; transition: transform .23s ease, visibility .23s ease; overflow-y: auto; box-shadow: 18px 0 40px rgba(44,42,40,.16); }
.drawer-open .site-drawer { transform: translateX(0); visibility: visible; pointer-events: auto; }
.drawer-head { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 62px; padding: 9px 16px; background: var(--elephant); border-bottom: 1px solid var(--border); }
.drawer-brand { display: flex; align-items: center; gap: 9px; font-weight: 800; color: var(--ink); }
.icon-button { min-height: 44px; min-width: 52px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--ink); cursor: pointer; }
.drawer-body { padding: 10px 16px 26px; }
.drawer-body section { padding: 14px 0; border-bottom: 1px solid var(--border); }
.drawer-body section:last-child { border-bottom: 0; }
.drawer-body h2 { font-size: 13px; margin-bottom: 8px; color: var(--clay); }
.drawer-body a { display: block; padding: 8px 0; }
.drawer-body b { display: block; color: var(--ink); font-size: 14px; }
.drawer-body span { display: block; color: var(--muted); font-size: 12px; margin-top: 2px; }
.search-panel { position: fixed; z-index: 1000; top: 74px; left: 50%; width: min(700px, calc(100% - 32px)); transform: translate(-50%,-12px); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .2s ease, transform .2s ease, visibility .2s ease; }
.search-open .search-panel { opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%,0); }
.search-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); padding: 22px; }
.search-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.search-top h2 { margin-top: 4px; }
.search-card label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.search-row { display: grid; grid-template-columns: 1fr 82px; gap: 8px; }
.search-row input { width: 100%; min-height: 44px; border: 1px solid var(--border); border-radius: 8px; background: #fffdf8; color: var(--ink); padding: 0 12px; }
.search-row button { min-height: 44px; border: 0; border-radius: 8px; background: var(--ink); color: var(--surface); cursor: pointer; }
.search-hint { margin-top: 8px; font-size: 12px; color: var(--muted); }
.quick-search { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.quick-search a { min-height: 40px; padding: 0 12px; display: inline-flex; align-items: center; border: 1px solid var(--accent-border); border-radius: 8px; color: var(--ink); background: var(--surface-2); }
.ui-locked { overflow: hidden; }
.mobile-bottom { display: none; }

@media (max-width: 720px) {
    .site-main { padding-top: 74px; padding-bottom: calc(56px + env(safe-area-inset-bottom)); }
    .xiangbu { display: none; }
    .top-inner,.head-inner,.page-wrap,.home-wrap,.footer-inner { width: calc(100% - 32px); }
    .head-app { padding: 0 9px; }
    .section { padding: 38px 0; }
    .home-intro { padding-top: 38px; }
    .quote-grid,.card-pair,.help-grid,.contact-paths { grid-template-columns: 1fr; }
    .step-content.with-media { grid-template-columns: 1fr; }
    .period-row { grid-template-columns: 82px 1fr; gap: 12px; }
    .product-split { grid-template-columns: 1fr; gap: 18px; }
    .product-split .media-slot { order: 0; }
    .numbered-intro { grid-template-columns: 1fr; gap: 6px; }
    .numbered-intro .big-number { margin-bottom: 2px; }
    .topic-row { grid-template-columns: 1fr; gap: 6px; }
    .footer-groups { grid-template-columns: 1fr 1fr; gap: 18px; }
    .search-panel { inset: 0; width: 100%; transform: none; background: var(--ink); }
    .search-open .search-panel { transform: none; }
    .search-card { min-height: 100vh; border: 0; border-radius: 0; background: var(--ink); color: var(--surface); padding: 24px 16px; }
    .search-top h2,.search-card label { color: var(--surface); }
    .search-hint { color: #D4CFC6; }
    .search-card .icon-button { background: transparent; border-color: rgba(244,241,234,.32); color: var(--surface); }
    .quick-search a { color: var(--surface); background: rgba(244,241,234,.08); border-color: rgba(244,241,234,.28); }
    .mobile-bottom { position: fixed; z-index: 880; left: 0; right: 0; bottom: 0; height: calc(48px + env(safe-area-inset-bottom)); padding-bottom: env(safe-area-inset-bottom); display: grid; grid-template-columns: repeat(4,1fr); background: var(--surface); border-top: 1px solid var(--border); }
    .mobile-bottom a { min-height: 48px; display: flex; align-items: center; justify-content: center; color: var(--ink); font-size: 13px; }
    .mobile-bottom a.is-active { background: var(--ink); color: var(--surface); }
    .drawer-open .mobile-bottom { z-index: 880; }
    .frame-tall { height: 300px; }
}
@media (max-width: 430px) {
    .head-inner { gap: 8px; }
    .brand-link img { max-width: 140px; }
    .footer-groups { grid-template-columns: 1fr; }
    .step-card { grid-template-columns: 42px 1fr; }
    .vertical-flow .flow-row { grid-template-columns: 52px 1fr; }
    .status-item { grid-template-columns: 82px 1fr; }
}

.mt-14 { margin-top: 14px; }
.mt-16 { margin-top: 16px; }
.mt-18 { margin-top: 18px; }
.center-text { text-align: center; }
.center-copy { margin-left: auto; margin-right: auto; }
.buttons-center { justify-content: center; }
.brand-note .brand-eyebrow { color: #D9B8A9; }