/* ============================================================
   快连官网 · 第二套模板（星火橙）
   设计指纹：暖米白底 + 琥珀橙→玫红渐变 + 斜切造型 + 分屏 Hero
   与第一套（深海蓝卡片风）完全不同，防 Bing 相似度惩罚
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
    --bg: #fdf9f4;            /* 暖米白 */
    --card: #ffffff;
    --ink: #201c18;           /* 暖黑 */
    --slate: #57534e;
    --muted: #a8a29e;
    --line: #f1e7da;          /* 暖边框 */
    --coal: #1c1917;          /* 深炭（页脚/深区） */
    --coal-2: #292524;
    --orange: #f97316;
    --rose: #ec4899;
    --amber: #ffb020;
    --grad: linear-gradient(115deg, #ff8a00 0%, #ff4d3d 55%, #ff2d78 100%);
    --grad-soft: linear-gradient(115deg, rgba(255,138,0,.10), rgba(255,45,120,.10));
    --green: #16a34a;
    --radius: 12px;
    --radius-lg: 18px;
    --shadow: 0 10px 30px rgba(120, 53, 15, .08);
    --shadow-lg: 0 20px 50px rgba(120, 53, 15, .16);
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
section { scroll-margin-top: 84px; }
::selection { background: rgba(255,77,61,.18); }

/* ---------- 通用组件 ---------- */
.section { padding: 76px 0; }
.section-head { max-width: 680px; margin: 0 auto 46px; }
.section-head.left { margin-left: 0; }
.section-head .eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: .78rem; font-weight: 800; letter-spacing: .14em;
    color: var(--orange); text-transform: uppercase;
    background: var(--grad-soft); border: 1px solid rgba(255,77,61,.22);
    padding: 5px 16px; border-radius: 4px; margin-bottom: 16px;
}
.section-head .eyebrow::before { content: ""; width: 14px; height: 2px; background: var(--grad); border-radius: 2px; }
.section-head h2 { font-size: 2.05rem; font-weight: 900; line-height: 1.3; letter-spacing: .5px; }
.section-head p { color: var(--slate); margin-top: 10px; font-size: 1rem; }

.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 13px 30px; border-radius: 8px;
    font-weight: 700; font-size: .95rem; border: none; cursor: pointer;
    transition: transform .18s, box-shadow .18s, background .18s;
}
.btn:hover { transform: translateY(-2px); }
.btn-grad { background: var(--grad); color: #fff; box-shadow: 0 10px 24px rgba(255,77,61,.32); }
.btn-grad:hover { box-shadow: 0 14px 32px rgba(255,77,61,.42); }
.btn-ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.5); }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.1); }
.btn-soft { background: var(--grad-soft); color: #e0442f; border: 1px solid rgba(255,77,61,.24); }
.btn-lg { padding: 15px 38px; font-size: 1.02rem; }
.btn-sm { padding: 9px 20px; font-size: .85rem; }

/* ---------- 导航（透明吸顶，滚动后实底） ---------- */
.navbar {
    position: absolute; top: 0; left: 0; right: 0; z-index: 100;
    color: #fff; transition: background .25s, box-shadow .25s, color .25s;
}
.navbar.scrolled {
    position: fixed; background: rgba(255,253,250,.92);
    backdrop-filter: blur(10px); color: var(--ink);
    box-shadow: 0 6px 24px rgba(28,25,23,.08); border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-size: 1.5rem; font-weight: 900; }
.logo .logo-mark {
    width: 38px; height: 38px; border-radius: 10px; background: var(--grad);
    display: inline-flex; align-items: center; justify-content: center; color: #fff;
    font-size: 1.05rem; box-shadow: 0 6px 16px rgba(255,77,61,.35);
}
.logo em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links > a { font-size: .93rem; font-weight: 600; opacity: .92; position: relative; padding: 6px 0; }
.nav-links > a:hover { opacity: 1; }
.navbar.scrolled .nav-links > a { color: var(--slate); }
.navbar.scrolled .nav-links > a:hover { color: var(--orange); }
.nav-links > a.active::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
    border-radius: 3px; background: var(--grad);
}
.navbar.scrolled .nav-links > a.active { color: var(--ink); }
.btn-nav { background: var(--grad); color: #fff !important; padding: 10px 22px !important; border-radius: 8px; font-weight: 700 !important; box-shadow: 0 8px 18px rgba(255,77,61,.3); }
.btn-nav:hover { transform: translateY(-1px); }
.burger { display: none; background: none; border: none; font-size: 1.4rem; color: inherit; cursor: pointer; }

/* ---------- Hero（暖色斜切分屏） ---------- */
.hero {
    background:
        radial-gradient(700px 340px at 85% -10%, rgba(255,176,32,.28), transparent 60%),
        radial-gradient(640px 400px at 8% 115%, rgba(255,45,120,.22), transparent 60%),
        linear-gradient(120deg, #ff9a2e 0%, #ff4d3d 52%, #ff2d78 100%);
    color: #fff; padding: 148px 0 120px; position: relative; overflow: hidden;
}
.hero::after { /* 底部斜切过渡 */
    content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 64px;
    background: var(--bg); clip-path: polygon(0 100%, 100% 0, 100% 100%);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; position: relative; z-index: 2; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.34);
    color: #fff; font-size: .8rem; font-weight: 700; padding: 6px 16px;
    border-radius: 4px; margin-bottom: 22px; backdrop-filter: blur(4px);
}
.hero h1 { font-size: 3rem; font-weight: 900; line-height: 1.16; letter-spacing: 1px; margin-bottom: 20px; }
.hero h1 .hl { position: relative; white-space: nowrap; }
.hero h1 .hl::after { content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: 12px; background: rgba(255,255,255,.25); z-index: -1; border-radius: 3px; }
.hero-sub { font-size: 1.06rem; color: rgba(255,255,255,.9); max-width: 520px; line-height: 1.95; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-trust { display: flex; gap: 20px; flex-wrap: wrap; font-size: .86rem; color: rgba(255,255,255,.88); }
.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust i { color: #fff; }

/* Hero 右侧：连接控制台（纯 CSS 绘制） */
.console {
    background: rgba(28,25,23,.55); border: 1px solid rgba(255,255,255,.2);
    border-radius: 18px; padding: 20px; backdrop-filter: blur(10px);
    box-shadow: 0 34px 80px rgba(80,20,0,.4); animation: floaty 6s ease-in-out infinite;
    transform: rotate(-1.2deg);
}
@keyframes floaty { 0%,100% { transform: rotate(-1.2deg) translateY(0); } 50% { transform: rotate(-1.2deg) translateY(-10px); } }
.console-bar { display: flex; align-items: center; gap: 8px; padding-bottom: 14px; border-bottom: 1px solid rgba(255,255,255,.14); margin-bottom: 16px; }
.console-bar i { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.console-bar .c-title { margin-left: auto; font-size: .78rem; color: rgba(255,255,255,.7); font-weight: 600; }
.console-body { display: grid; grid-template-columns: 130px 1fr; gap: 18px; align-items: center; }
.ring {
    width: 124px; height: 124px; border-radius: 50%; position: relative;
    background: conic-gradient(#ffb020 0deg, #ff4d3d 160deg, rgba(255,255,255,.14) 160deg 360deg);
    display: flex; align-items: center; justify-content: center;
}
.ring::before { content: ""; position: absolute; inset: 10px; border-radius: 50%; background: #241f1b; }
.ring .ring-core { position: relative; text-align: center; color: #fff; }
.ring .ring-core b { display: block; font-size: 1.05rem; }
.ring .ring-core span { font-size: .66rem; color: #ffd9a8; }
.console-meta p { font-size: .86rem; color: rgba(255,255,255,.85); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.console-meta p i { color: #34d399; }
.console-meta .c-btns { display: flex; gap: 8px; margin-top: 12px; }
.console-meta .c-btns .btn { padding: 8px 16px; font-size: .8rem; border-radius: 6px; }
.console-nodes { margin-top: 16px; display: grid; gap: 8px; }
.cn-row { display: flex; align-items: center; justify-content: space-between; font-size: .8rem; color: rgba(255,255,255,.82); background: rgba(255,255,255,.06); border-radius: 8px; padding: 9px 14px; border: 1px solid rgba(255,255,255,.08); }
.cn-row b { color: #fff; font-weight: 700; }
.cn-row .cn-lat { color: #ffd9a8; }
.cn-row .cn-ok { color: #34d399; }

/* ---------- 数据滚动条 ---------- */
.marquee { background: var(--coal); color: rgba(255,255,255,.85); overflow: hidden; padding: 14px 0; }
.marquee-track { display: flex; width: max-content; animation: marquee-scroll 32s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-group { display: flex; align-items: center; gap: 48px; padding-right: 48px; font-size: .9rem; font-weight: 600; }
.marquee-group span { display: inline-flex; align-items: center; gap: 10px; white-space: nowrap; }
.marquee-group i { color: var(--amber); }
@keyframes marquee-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- 左右交替（zigzag） ---------- */
.zz { display: grid; gap: 44px; }
.zz-row { display: grid; grid-template-columns: 1fr 1.2fr; gap: 52px; align-items: center; }
.zz-row.zz-rev { grid-template-columns: 1.2fr 1fr; }
.zz-rev .zz-media { order: 2; }
.zz-media { position: relative; }
.zz-media::before { content: ""; position: absolute; inset: 22px -10px -10px 22px; background: var(--grad-soft); border-radius: var(--radius-lg); z-index: 0; }
.zz-card {
    position: relative; z-index: 1; background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius-lg); padding: 40px 36px; box-shadow: var(--shadow);
    overflow: hidden;
}
.zz-card::after { content: ""; position: absolute; top: 0; right: 0; width: 110px; height: 110px; background: var(--grad); opacity: .08; clip-path: polygon(100% 0, 0 0, 100% 100%); }
.zz-icon {
    width: 62px; height: 62px; border-radius: 14px; background: var(--grad);
    color: #fff; font-size: 1.6rem; display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px; box-shadow: 0 12px 26px rgba(255,77,61,.34);
}
.zz-card h3 { font-size: 1.35rem; font-weight: 900; margin-bottom: 12px; }
.zz-card p { color: var(--slate); font-size: .97rem; }
.zz-card .zz-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.zz-card .zz-tags span { font-size: .76rem; font-weight: 700; color: #e0442f; background: var(--grad-soft); border: 1px solid rgba(255,77,61,.2); padding: 4px 12px; border-radius: 4px; }
.zz-body h3 { font-size: 1.5rem; font-weight: 900; margin-bottom: 12px; line-height: 1.4; }
.zz-body > p { color: var(--slate); font-size: 1rem; margin-bottom: 14px; }
.zz-body ul { display: grid; gap: 9px; margin-top: 14px; }
.zz-body li { display: flex; gap: 10px; align-items: flex-start; color: var(--slate); font-size: .95rem; }
.zz-body li i { color: var(--orange); margin-top: 5px; }

/* ---------- 全球节点：地区 Tab + 节点表 ---------- */
.zone-tabs { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.zone-tab {
    background: var(--card); border: 1px solid var(--line); color: var(--slate);
    font-size: .92rem; font-weight: 700; padding: 10px 24px; border-radius: 8px;
    cursor: pointer; transition: all .2s;
}
.zone-tab:hover { border-color: rgba(255,77,61,.4); color: var(--orange); }
.zone-tab.active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 8px 20px rgba(255,77,61,.3); }
.zone-panel { display: none; }
.zone-panel.active { display: block; animation: fadeIn .35s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.node-table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.node-table th, .node-table td { padding: 15px 20px; text-align: left; font-size: .93rem; }
.node-table thead th { background: var(--coal); color: #fff; font-weight: 700; font-size: .86rem; letter-spacing: .06em; }
.node-table tbody tr { border-top: 1px solid var(--line); transition: background .15s; }
.node-table tbody tr:hover { background: #fff8f1; }
.node-table td b { color: var(--ink); }
.node-table .st { display: inline-flex; align-items: center; gap: 7px; font-weight: 700; color: var(--green); }
.node-table .st::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(22,163,74,.15); }
.node-table .pct { color: var(--orange); font-weight: 700; }

/* ---------- 全平台 2×2 ---------- */
.plat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.plat-card {
    background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg);
    padding: 28px 30px; display: flex; align-items: center; gap: 22px;
    transition: transform .22s, box-shadow .22s; position: relative; overflow: hidden;
}
.plat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.plat-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--grad); }
.plat-icon { width: 62px; height: 62px; flex-shrink: 0; border-radius: 14px; background: var(--grad-soft); color: #e0442f; font-size: 1.7rem; display: flex; align-items: center; justify-content: center; }
.plat-info { flex: 1; }
.plat-info h3 { font-size: 1.15rem; font-weight: 800; }
.plat-info .plat-ver { font-size: .78rem; color: var(--muted); }
.plat-info p { font-size: .86rem; color: var(--slate); margin: 6px 0 0; }
.plat-card .btn { flex-shrink: 0; }

/* ---------- 流程条（横排箭头） ---------- */
.flow { display: flex; align-items: stretch; gap: 0; counter-reset: f; }
.flow-step {
    flex: 1; background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius-lg); padding: 30px 26px; position: relative;
    transition: transform .2s, box-shadow .2s;
}
.flow-step:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.flow-step .f-no {
    width: 44px; height: 44px; border-radius: 10px; background: var(--grad); color: #fff;
    font-weight: 900; font-size: 1.05rem; display: flex; align-items: center; justify-content: center;
    margin-bottom: 16px; box-shadow: 0 8px 18px rgba(255,77,61,.3);
}
.flow-step h3 { font-size: 1.08rem; font-weight: 800; margin-bottom: 8px; }
.flow-step p { color: var(--slate); font-size: .9rem; }
.flow-arrow { display: flex; align-items: center; justify-content: center; width: 44px; color: var(--amber); font-size: 1.1rem; flex-shrink: 0; }

/* ---------- 双列 FAQ ---------- */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
.faq-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; transition: border-color .2s, box-shadow .2s; }
.faq-item.open { border-color: rgba(255,77,61,.45); box-shadow: var(--shadow); }
.faq-q {
    width: 100%; background: none; border: none; text-align: left; cursor: pointer;
    padding: 20px 22px; display: flex; justify-content: space-between; align-items: center; gap: 12px;
    font-family: inherit; font-size: .98rem; font-weight: 700; color: var(--ink);
}
.faq-q .q-no { color: var(--orange); font-weight: 900; margin-right: 4px; }
.faq-q .q-ic { flex-shrink: 0; width: 26px; height: 26px; border-radius: 7px; background: var(--grad-soft); color: #e0442f; display: flex; align-items: center; justify-content: center; font-size: .8rem; transition: transform .25s, background .25s; }
.faq-item.open .q-ic { transform: rotate(45deg); background: var(--grad); color: #fff; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .32s ease; }
.faq-a-inner { padding: 0 22px 20px; color: var(--slate); font-size: .92rem; line-height: 1.9; }

/* ---------- 资讯列表（日期线） ---------- */
.news-list { display: grid; gap: 16px; }
.news-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px 26px; display: flex; gap: 22px; align-items: center; transition: transform .2s, box-shadow .2s; }
.news-item:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.news-item .n-badge { flex-shrink: 0; width: 86px; text-align: center; background: var(--grad-soft); border: 1px solid rgba(255,77,61,.2); border-radius: 10px; padding: 10px 6px; }
.news-item .n-badge b { display: block; font-size: 1.15rem; font-weight: 900; color: #e0442f; line-height: 1.2; }
.news-item .n-badge span { font-size: .72rem; color: var(--muted); }
.news-item .n-body { flex: 1; }
.news-item .n-body h3 { font-size: 1.06rem; font-weight: 800; margin-bottom: 6px; transition: color .15s; }
.news-item:hover .n-body h3 { color: var(--orange); }
.news-item .n-body p { color: var(--slate); font-size: .9rem; }
.news-item .n-more { flex-shrink: 0; color: var(--orange); font-weight: 700; font-size: .88rem; display: inline-flex; align-items: center; gap: 6px; }
.news-item:hover .n-more { gap: 10px; }

/* ---------- CTA（斜切渐变横幅） ---------- */
.cta-band {
    background: var(--grad); color: #fff; border-radius: var(--radius-lg);
    padding: 58px 56px; text-align: center; position: relative; overflow: hidden;
    clip-path: polygon(0 8%, 100% 0, 100% 92%, 0 100%);
}
.cta-band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(480px 240px at 85% 15%, rgba(255,255,255,.28), transparent 60%); }
.cta-band h2 { font-size: 1.9rem; font-weight: 900; margin-bottom: 10px; position: relative; }
.cta-band p { opacity: .92; margin-bottom: 26px; position: relative; }
.cta-band .btn { background: #fff; color: #e0442f; position: relative; box-shadow: 0 12px 30px rgba(0,0,0,.2); }

/* ---------- 页脚 ---------- */
.footer { background: var(--coal); color: rgba(255,255,255,.7); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1fr; gap: 44px; margin-bottom: 36px; }
.f-logo { display: inline-flex; align-items: center; gap: 10px; font-size: 1.4rem; font-weight: 900; color: #fff; margin-bottom: 14px; }
.f-logo .logo-mark { width: 34px; height: 34px; border-radius: 9px; background: var(--grad); display: inline-flex; align-items: center; justify-content: center; font-size: .95rem; }
.f-about { font-size: .88rem; line-height: 1.85; max-width: 330px; }
.f-social { display: flex; gap: 10px; margin-top: 18px; }
.f-social a { width: 38px; height: 38px; border-radius: 8px; background: rgba(255,255,255,.08); display: flex; align-items: center; justify-content: center; color: #fff; font-size: .92rem; transition: background .2s, transform .2s; }
.f-social a:hover { background: var(--grad); transform: translateY(-2px); }
.f-col h4 { color: #fff; font-size: .98rem; font-weight: 800; margin-bottom: 18px; letter-spacing: .06em; }
.f-col li { margin-bottom: 10px; }
.f-col li a { font-size: .88rem; transition: color .2s; }
.f-col li a:hover { color: var(--amber); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 22px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: .8rem; }
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-bottom a:hover { color: var(--amber); }

/* ---------- 返回顶部 ---------- */
.back-top { position: fixed; bottom: 28px; right: 28px; width: 48px; height: 48px; border-radius: 10px; border: none; background: var(--grad); color: #fff; font-size: 1.05rem; cursor: pointer; box-shadow: 0 10px 24px rgba(255,77,61,.4); display: none; align-items: center; justify-content: center; z-index: 90; transition: transform .2s; }
.back-top:hover { transform: translateY(-3px); }

/* ---------- 子页 Hero ---------- */
.page-hero {
    background:
        radial-gradient(560px 260px at 90% -10%, rgba(255,176,32,.3), transparent 60%),
        linear-gradient(120deg, #ff9a2e 0%, #ff4d3d 55%, #ff2d78 100%);
    color: #fff; padding: 128px 0 84px; position: relative; overflow: hidden;
}
.page-hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 52px; background: var(--bg); clip-path: polygon(0 100%, 100% 0, 100% 100%); }
.page-hero h1 { font-size: 2.4rem; font-weight: 900; letter-spacing: 1px; margin-bottom: 12px; position: relative; z-index: 2; }
.page-hero p { color: rgba(255,255,255,.9); max-width: 660px; font-size: 1rem; line-height: 1.9; position: relative; z-index: 2; }
.page-hero .crumb { display: inline-flex; align-items: center; gap: 8px; font-size: .8rem; color: rgba(255,255,255,.75); margin-bottom: 16px; position: relative; z-index: 2; }
.page-hero .crumb a:hover { color: #fff; }

/* ---------- 下载页：平台选择器 ---------- */
.sel-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 26px; }
.sel-tab {
    flex: 1; min-width: 150px; background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius-lg); padding: 18px 16px; text-align: center; cursor: pointer;
    transition: all .2s; font-family: inherit;
}
.sel-tab i { font-size: 1.5rem; color: var(--muted); display: block; margin-bottom: 6px; transition: color .2s; }
.sel-tab b { display: block; font-size: .95rem; font-weight: 800; color: var(--slate); }
.sel-tab span { font-size: .75rem; color: var(--muted); }
.sel-tab:hover { border-color: rgba(255,77,61,.4); }
.sel-tab.active { background: var(--grad); border-color: transparent; box-shadow: 0 12px 28px rgba(255,77,61,.32); }
.sel-tab.active i, .sel-tab.active b, .sel-tab.active span { color: #fff; }
.sel-panel { display: none; }
.sel-panel.active { display: grid; grid-template-columns: 1.3fr .7fr; gap: 24px; animation: fadeIn .35s ease; }
.sel-info { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 34px 34px; box-shadow: var(--shadow); }
.sel-info h3 { font-size: 1.4rem; font-weight: 900; margin-bottom: 6px; }
.sel-info .sel-ver { display: inline-block; background: var(--grad); color: #fff; font-size: .78rem; font-weight: 800; padding: 4px 14px; border-radius: 6px; margin-bottom: 14px; }
.sel-info .sel-desc { color: var(--slate); font-size: .97rem; margin-bottom: 16px; }
.sel-spec { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 18px; margin-bottom: 22px; }
.sel-spec div { font-size: .86rem; color: var(--slate); }
.sel-spec div b { color: var(--ink); display: block; font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin-bottom: 2px; }
.sel-art { background: var(--grad); border-radius: var(--radius-lg); color: #fff; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 30px; position: relative; overflow: hidden; }
.sel-art i { font-size: 4rem; margin-bottom: 14px; filter: drop-shadow(0 10px 20px rgba(0,0,0,.2)); }
.sel-art b { font-size: 1.15rem; font-weight: 900; }
.sel-art span { font-size: .82rem; opacity: .9; }

/* ---------- 表格 ---------- */
.spec-table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.spec-table th, .spec-table td { padding: 14px 18px; text-align: left; font-size: .92rem; }
.spec-table thead th { background: var(--coal); color: #fff; font-weight: 700; font-size: .85rem; }
.spec-table tbody tr { border-top: 1px solid var(--line); }
.spec-table tbody tr:nth-child(even) { background: #fffaf4; }
.spec-table td:first-child { font-weight: 700; white-space: nowrap; }

/* ---------- 时间线 ---------- */
.timeline { max-width: 760px; margin: 0 auto; position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 3px; background: linear-gradient(var(--amber), var(--rose)); border-radius: 3px; }
.tl-item { position: relative; margin-bottom: 22px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 20px 24px; }
.tl-item::before { content: ""; position: absolute; left: -31px; top: 26px; width: 14px; height: 14px; border-radius: 50%; background: var(--grad); box-shadow: 0 0 0 5px rgba(255,77,61,.16); }
.tl-item .tl-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.tl-item .tl-ver { background: var(--grad); color: #fff; font-size: .76rem; font-weight: 800; padding: 4px 14px; border-radius: 6px; }
.tl-item .tl-date { font-size: .8rem; color: var(--muted); font-weight: 700; }
.tl-item p { color: var(--slate); font-size: .9rem; }

/* ---------- 教程页：步骤轨 + 平台 Tab ---------- */
.rail { display: flex; gap: 10px; margin-bottom: 30px; counter-reset: r; }
.rail .rail-step { flex: 1; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 20px 18px; position: relative; overflow: hidden; }
.rail .rail-step::before { counter-increment: r; content: "0" counter(r); position: absolute; right: 12px; top: 8px; font-size: 2.2rem; font-weight: 900; color: rgba(255,77,61,.1); line-height: 1; }
.rail .rail-step h3 { font-size: 1rem; font-weight: 800; margin-bottom: 6px; }
.rail .rail-step p { font-size: .84rem; color: var(--slate); }
.gtabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 24px; }
.gtab { background: var(--card); border: 1px solid var(--line); color: var(--slate); font-weight: 700; font-size: .92rem; padding: 11px 24px; border-radius: 8px; cursor: pointer; font-family: inherit; transition: all .2s; }
.gtab:hover { border-color: rgba(255,77,61,.4); color: var(--orange); }
.gtab.active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 8px 20px rgba(255,77,61,.3); }
.gpanel { display: none; }
.gpanel.active { display: block; animation: fadeIn .35s ease; }
.guide-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 34px 36px; box-shadow: var(--shadow); }
.guide-card h3 { display: flex; align-items: center; gap: 12px; font-size: 1.25rem; font-weight: 900; margin-bottom: 18px; }
.guide-card h3 i { color: var(--orange); font-size: 1.5rem; }
.guide-list { counter-reset: g; display: grid; gap: 12px; }
.guide-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--slate); font-size: .95rem; line-height: 1.8; }
.guide-list li::before { counter-increment: g; content: counter(g); flex-shrink: 0; width: 28px; height: 28px; border-radius: 8px; background: var(--grad); color: #fff; font-weight: 800; font-size: .85rem; display: flex; align-items: center; justify-content: center; margin-top: 3px; }

/* ---------- 卡片组（技术/须知） ---------- */
.card-rows { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tcard { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px 28px; text-align: center; transition: transform .22s, box-shadow .22s; }
.tcard:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.tcard .t-icon { width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 14px; background: var(--grad); color: #fff; font-size: 1.5rem; display: flex; align-items: center; justify-content: center; box-shadow: 0 10px 22px rgba(255,77,61,.3); }
.tcard h3 { font-size: 1.1rem; font-weight: 800; margin-bottom: 8px; }
.tcard p { color: var(--slate); font-size: .9rem; }

/* ---------- 里程碑时间线（关于页） ---------- */
.milestones { max-width: 760px; margin: 0 auto; }
.mile-item { display: grid; grid-template-columns: 120px 1fr; gap: 22px; padding: 18px 0; border-bottom: 1px dashed var(--line); }
.mile-item:last-child { border-bottom: none; }
.mile-item .m-date { font-weight: 900; color: var(--orange); font-size: .95rem; padding-top: 2px; }
.mile-item .m-text h4 { font-size: 1.02rem; font-weight: 800; margin-bottom: 4px; }
.mile-item .m-text p { color: var(--slate); font-size: .9rem; }

/* ---------- 资讯页：文章卡 ---------- */
.article-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px 32px; box-shadow: var(--shadow); }
.article-card h3 { font-size: 1.2rem; font-weight: 900; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.article-card h3 i { color: var(--orange); }
.article-card .a-date { font-size: .8rem; color: var(--muted); font-weight: 700; margin-bottom: 12px; display: block; }
.article-card p { color: var(--slate); font-size: .94rem; line-height: 1.95; margin-bottom: 10px; }
.article-card p:last-child { margin-bottom: 0; }
.article-list { display: grid; gap: 18px; }
.side-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; }
.side-card h3 { font-size: 1rem; font-weight: 900; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.side-card h3 i { color: var(--orange); }
.side-card li { padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: .88rem; color: var(--slate); }
.side-card li:last-child { border-bottom: none; }
.side-card li a:hover { color: var(--orange); }
.layout-2col { display: grid; grid-template-columns: 1fr 300px; gap: 26px; align-items: start; }

/* ---------- 长文 prose ---------- */
.prose-block { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 38px 40px; box-shadow: var(--shadow); }
.prose-block h3 { font-size: 1.25rem; font-weight: 900; margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.prose-block h3 i { color: var(--orange); }
.prose-block p { color: var(--slate); font-size: .97rem; line-height: 2.05; margin-bottom: 12px; }
.prose-block p:last-child { margin-bottom: 0; }

/* ---------- 联系卡 ---------- */
.contact-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 40px; text-align: center; max-width: 580px; margin: 0 auto; box-shadow: var(--shadow); }
.contact-card .c-icon { width: 64px; height: 64px; margin: 0 auto 16px; border-radius: 16px; background: var(--grad); color: #fff; font-size: 1.7rem; display: flex; align-items: center; justify-content: center; box-shadow: 0 12px 26px rgba(255,77,61,.35); }
.contact-card h3 { font-size: 1.3rem; font-weight: 900; margin-bottom: 8px; }
.contact-card p { color: var(--slate); margin-bottom: 22px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; gap: 44px; }
    .console { max-width: 460px; }
    .zz-row, .zz-row.zz-rev { grid-template-columns: 1fr; gap: 30px; }
    .zz-rev .zz-media { order: 0; }
    .card-rows { grid-template-columns: 1fr 1fr; }
    .layout-2col { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .burger { display: block; }
    .nav-links { display: none; position: absolute; left: 0; right: 0; top: 72px; background: #fff; color: var(--ink); flex-direction: column; align-items: center; gap: 4px; padding: 16px 0 20px; border-bottom: 1px solid var(--line); box-shadow: 0 20px 40px rgba(28,25,23,.12); }
    .nav-links.open { display: flex; }
    .nav-links > a { padding: 11px 0; width: 100%; text-align: center; color: var(--slate); }
    .nav-links > a.active::after { display: none; }
    .navbar:not(.scrolled) .nav-links { background: var(--coal-2); color: #fff; }
    .navbar:not(.scrolled) .nav-links > a { color: rgba(255,255,255,.85); }
    .hero { padding: 120px 0 100px; }
    .hero h1 { font-size: 2.2rem; }
    .console-body { grid-template-columns: 1fr; justify-items: center; text-align: center; }
    .faq-grid, .plat-grid, .card-rows { grid-template-columns: 1fr; }
    .flow { flex-direction: column; }
    .flow-arrow { transform: rotate(90deg); width: auto; padding: 8px 0; }
    .sel-panel.active { grid-template-columns: 1fr; }
    .news-item { flex-direction: column; align-items: flex-start; }
    .news-item .n-more { align-self: flex-end; }
    .rail { flex-direction: column; }
    .section { padding: 56px 0; }
    .cta-band { padding: 44px 24px; }
    .cta-band h2 { font-size: 1.5rem; }
    .page-hero { padding: 112px 0 68px; }
    .page-hero h1 { font-size: 1.9rem; }
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .f-about { max-width: 100%; margin: 0 auto; }
    .f-social { justify-content: center; }
    .footer-bottom { justify-content: center; text-align: center; }
    .mile-item { grid-template-columns: 1fr; gap: 4px; }
    .sel-spec { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .hero h1 { font-size: 1.85rem; }
    .hero-actions .btn { width: 100%; justify-content: center; }
    .section-head h2 { font-size: 1.6rem; }
    .container { padding: 0 16px; }
    .zone-tab { padding: 9px 16px; font-size: .84rem; }
    .node-table { font-size: .8rem; }
    .node-table th, .node-table td { padding: 11px 12px; }
}