/* ============================================================
   52IPTV 产品官网 · 设计系统
   深色科技风 / 玻璃拟态 / 渐变光晕
   ============================================================ */

:root {
    --bg: #060a13;
    --bg-soft: #0a111f;
    --bg-card: rgba(255, 255, 255, 0.035);
    --bg-card-hover: rgba(255, 255, 255, 0.065);
    --line: rgba(255, 255, 255, 0.09);
    --line-strong: rgba(255, 255, 255, 0.16);
    --text: #eaf0f8;
    --text-soft: #aab7c9;
    --muted: #7c8aa0;

    --brand: #2fe08a;
    --brand-deep: #20a53a;
    --cyan: #35c6ff;
    --violet: #8b5cf6;
    --amber: #fbbf24;
    --pink: #f472b6;

    --grad-brand: linear-gradient(135deg, #35c6ff 0%, #2fe08a 100%);
    --shadow-glow: 0 0 60px rgba(47, 224, 138, 0.18);
    --radius: 18px;
    --radius-lg: 26px;
    --maxw: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

::selection { background: rgba(47, 224, 138, 0.3); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.grad-text {
    background: var(--grad-brand);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 30px;
    border-radius: 999px;
    font-size: 15.5px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
    white-space: nowrap;
}
.btn-primary {
    background: var(--grad-brand);
    color: #04120b;
    box-shadow: 0 8px 30px rgba(47, 224, 138, 0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(47, 224, 138, 0.42); }
.btn-ghost {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--line-strong);
    color: var(--text);
    backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); transform: translateY(-2px); }
.btn .arr { transition: transform .25s ease; }
.btn:hover .arr { transform: translateX(4px); }

/* ---------- 导航 ---------- */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
    border-bottom: 1px solid transparent;
}
.nav.scrolled {
    background: rgba(6, 10, 19, 0.82);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom-color: var(--line);
}
.nav-inner {
    max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
    height: 70px; display: flex; align-items: center; justify-content: space-between;
}
.logo { font-size: 23px; font-weight: 800; letter-spacing: .5px; display: flex; align-items: center; gap: 9px; }
.logo .mark {
    width: 34px; height: 34px; border-radius: 10px;
    background: var(--grad-brand);
    display: grid; place-items: center;
    box-shadow: 0 4px 18px rgba(47, 224, 138, 0.4);
}
.logo .mark svg { width: 19px; height: 19px; }
.logo b { color: #fff; font-weight: 800; }
.logo i { font-style: normal; color: var(--brand); }

.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-menu > li { position: relative; }
.nav-menu > li > a {
    display: block; padding: 9px 15px; font-size: 15px;
    color: var(--text-soft); border-radius: 9px;
    transition: color .2s ease, background .2s ease;
}
.nav-menu > li > a:hover,
.nav-menu > li > a.active { color: #fff; background: rgba(255,255,255,0.06); }
.nav-menu > li > a.active { color: var(--brand); }

/* 下拉 */
.nav-dropdown {
    position: absolute; top: calc(100% + 12px); left: 50%;
    transform: translate(-50%, 8px);
    width: 320px;
    background: rgba(12, 19, 33, 0.96);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 10px;
    backdrop-filter: blur(20px);
    box-shadow: 0 24px 60px rgba(0,0,0,0.5);
    opacity: 0; visibility: hidden; pointer-events: none;
    transition: opacity .22s ease, transform .22s ease, visibility .22s;
}
.nav-menu > li:hover .nav-dropdown {
    opacity: 1; visibility: visible; pointer-events: auto;
    transform: translate(-50%, 0);
}
.nav-dropdown a {
    display: flex; gap: 11px; align-items: flex-start;
    padding: 10px 12px; border-radius: 11px;
    transition: background .2s;
}
.nav-dropdown a:hover { background: rgba(255,255,255,0.06); }
.nav-dropdown .dd-ico {
    flex: none; width: 36px; height: 36px; border-radius: 10px;
    display: grid; place-items: center;
}
.nav-dropdown .dd-ico svg { width: 18px; height: 18px; }
.nav-dropdown b { display: block; font-size: 14px; color: var(--text); line-height: 1.4; }
.nav-dropdown small { font-size: 12.5px; color: var(--muted); }

.nav-cta { margin-left: 10px; }
.nav-toggle {
    display: none; background: none; border: none; cursor: pointer;
    width: 42px; height: 42px; border-radius: 10px;
}
.nav-toggle span {
    display: block; width: 20px; height: 2px; background: var(--text);
    margin: 5px auto; border-radius: 2px; transition: .3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首页 Hero ---------- */
.hero {
    position: relative;
    padding: 168px 0 110px;
    text-align: center;
    overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-bg::before {
    content: ""; position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse 75% 65% at 50% 30%, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 30%, #000 30%, transparent 75%);
}
.orb {
    position: absolute; border-radius: 50%;
    filter: blur(90px); opacity: .5;
    animation: float 12s ease-in-out infinite;
}
.orb-1 { width: 480px; height: 480px; background: rgba(47,224,138,0.28); top: -140px; left: 50%; margin-left: -420px; }
.orb-2 { width: 420px; height: 420px; background: rgba(53,198,255,0.22); top: -80px; left: 50%; margin-left: 80px; animation-delay: -4s; }
.orb-3 { width: 320px; height: 320px; background: rgba(139,92,246,0.18); top: 120px; left: 12%; animation-delay: -8s; }
@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); }
    50% { transform: translateY(-28px) translateX(14px); }
}

.hero-inner { position: relative; z-index: 2; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 9px;
    padding: 7px 18px; border-radius: 999px;
    background: rgba(47, 224, 138, 0.09);
    border: 1px solid rgba(47, 224, 138, 0.32);
    color: var(--brand); font-size: 13.5px; font-weight: 500;
    margin-bottom: 28px;
}
.hero-badge .dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--brand); box-shadow: 0 0 10px var(--brand);
    animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

.hero h1 {
    font-size: clamp(34px, 5.6vw, 62px);
    font-weight: 800; line-height: 1.18; letter-spacing: -1px;
    margin-bottom: 24px;
}
.hero p.lead {
    font-size: clamp(16px, 1.7vw, 19px);
    color: var(--text-soft);
    max-width: 680px; margin: 0 auto 42px;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero-stats {
    display: flex; justify-content: center; flex-wrap: wrap;
    gap: 56px; margin-top: 78px;
}
.hero-stats .st b {
    display: block; font-size: 32px; font-weight: 800;
    background: var(--grad-brand);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-stats .st span { font-size: 14px; color: var(--muted); }

/* ---------- 通用区块 ---------- */
.section { padding: 100px 0; position: relative; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 64px; }
.section-tag {
    display: inline-block; font-size: 13px; font-weight: 700;
    letter-spacing: 3px; text-transform: uppercase;
    color: var(--brand); margin-bottom: 16px;
}
.section-head h2 {
    font-size: clamp(28px, 3.6vw, 42px);
    font-weight: 800; letter-spacing: -.5px; line-height: 1.25;
    margin-bottom: 16px;
}
.section-head p { color: var(--text-soft); font-size: 17px; }

/* ---------- 产品矩阵 ---------- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 22px;
}
.p-card {
    position: relative; overflow: hidden;
    grid-column: span 2;
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 34px 30px;
    transition: transform .35s ease, border-color .35s ease, background .35s ease;
    display: flex; flex-direction: column;
}
.p-card.wide { grid-column: span 3; }
.p-card:hover {
    transform: translateY(-6px);
    background: var(--bg-card-hover);
    border-color: var(--line-strong);
}
.p-card .glow {
    position: absolute; width: 260px; height: 260px;
    border-radius: 50%; filter: blur(80px);
    opacity: .16; top: -100px; right: -80px;
    transition: opacity .35s;
    pointer-events: none;
}
.p-card:hover .glow { opacity: .3; }
.p-ico {
    width: 54px; height: 54px; border-radius: 15px;
    display: grid; place-items: center; margin-bottom: 22px;
    border: 1px solid var(--line-strong);
}
.p-ico svg { width: 26px; height: 26px; }
.p-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; }
.p-card .desc { color: var(--text-soft); font-size: 14.8px; margin-bottom: 20px; flex: 1; }
.p-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.p-tags span {
    font-size: 12.5px; padding: 4px 11px; border-radius: 999px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--line);
    color: var(--text-soft);
}
.p-more {
    display: inline-flex; align-items: center; gap: 7px;
    font-size: 14.5px; font-weight: 600;
}
.p-more svg { width: 15px; height: 15px; transition: transform .25s; }
.p-card:hover .p-more svg { transform: translateX(4px); }

/* 产品配色 */
.c-green .p-ico { background: rgba(47,224,138,.12); color: var(--brand); }
.c-green .glow { background: var(--brand); }
.c-green .p-more { color: var(--brand); }
.c-cyan .p-ico { background: rgba(53,198,255,.12); color: var(--cyan); }
.c-cyan .glow { background: var(--cyan); }
.c-cyan .p-more { color: var(--cyan); }
.c-amber .p-ico { background: rgba(251,191,36,.12); color: var(--amber); }
.c-amber .glow { background: var(--amber); }
.c-amber .p-more { color: var(--amber); }
.c-pink .p-ico { background: rgba(244,114,182,.12); color: var(--pink); }
.c-pink .glow { background: var(--pink); }
.c-pink .p-more { color: var(--pink); }
.c-violet .p-ico { background: rgba(139,92,246,.12); color: var(--violet); }
.c-violet .glow { background: var(--violet); }
.c-violet .p-more { color: var(--violet); }

/* ---------- 协同架构 ---------- */
.suite-box {
    background: linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015));
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    position: relative; overflow: hidden;
}
.suite-box::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(600px 260px at 50% 0%, rgba(47,224,138,0.1), transparent 70%);
    pointer-events: none;
}
.suite-diagram {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 30px; align-items: center;
    position: relative; z-index: 1;
}
.suite-core {
    text-align: center;
    width: 190px; height: 190px; margin: 0 auto;
    border-radius: 50%;
    background: var(--grad-brand);
    display: grid; place-items: center;
    box-shadow: 0 0 0 14px rgba(47,224,138,0.07), 0 0 0 30px rgba(47,224,138,0.04), 0 20px 60px rgba(47,224,138,.25);
}
.suite-core b { font-size: 21px; color: #04120b; font-weight: 800; display: block; }
.suite-core small { color: rgba(4,18,11,.72); font-size: 12.5px; font-weight: 600; }
.suite-col { display: grid; gap: 14px; }
.suite-node {
    display: flex; align-items: center; gap: 13px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--line);
    border-radius: 14px; padding: 14px 18px;
    font-size: 14.5px;
}
.suite-node .n-ico {
    width: 34px; height: 34px; border-radius: 9px; flex: none;
    display: grid; place-items: center;
}
.suite-node .n-ico svg { width: 17px; height: 17px; }
.suite-node small { display: block; color: var(--muted); font-size: 12px; }
.suite-link { font-size: 26px; color: var(--brand); opacity: .55; }

/* ---------- 解决方案 ---------- */
.solution-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.sol-card {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 30px 26px;
    transition: transform .3s, border-color .3s, background .3s;
}
.sol-card:hover { transform: translateY(-5px); border-color: var(--line-strong); background: var(--bg-card-hover); }
.sol-ico {
    width: 48px; height: 48px; border-radius: 13px;
    background: rgba(53,198,255,.1); color: var(--cyan);
    display: grid; place-items: center; margin-bottom: 18px;
}
.sol-ico svg { width: 23px; height: 23px; }
.sol-card:nth-child(2) .sol-ico { background: rgba(47,224,138,.1); color: var(--brand); }
.sol-card:nth-child(3) .sol-ico { background: rgba(139,92,246,.1); color: var(--violet); }
.sol-card:nth-child(4) .sol-ico { background: rgba(251,191,36,.1); color: var(--amber); }
.sol-card h3 { font-size: 18px; margin-bottom: 9px; }
.sol-card p { font-size: 14px; color: var(--text-soft); }

/* ---------- 优势 ---------- */
.why-wrap {
    display: grid; grid-template-columns: 1.05fr 1fr;
    gap: 70px; align-items: center;
}
.why-list { display: grid; gap: 26px; }
.why-item { display: flex; gap: 18px; }
.why-item .w-ico {
    flex: none; width: 48px; height: 48px; border-radius: 13px;
    background: rgba(47,224,138,.1); border: 1px solid rgba(47,224,138,.25);
    color: var(--brand); display: grid; place-items: center;
}
.why-item .w-ico svg { width: 22px; height: 22px; }
.why-item h4 { font-size: 17.5px; margin-bottom: 6px; }
.why-item p { font-size: 14.5px; color: var(--text-soft); }

.why-visual {
    position: relative;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background:
        radial-gradient(400px 300px at 80% 0%, rgba(53,198,255,.14), transparent 70%),
        radial-gradient(400px 300px at 0% 100%, rgba(47,224,138,.14), transparent 70%),
        rgba(255,255,255,0.03);
    padding: 34px;
    min-height: 420px;
    display: grid; align-content: center; gap: 16px;
    overflow: hidden;
}
.metric-row {
    display: flex; align-items: center; justify-content: space-between;
    background: rgba(8,14,26,.7); border: 1px solid var(--line);
    border-radius: 14px; padding: 18px 22px;
    backdrop-filter: blur(6px);
}
.metric-row .m-name { font-size: 14px; color: var(--text-soft); display: flex; align-items: center; gap: 10px; }
.metric-row .m-name i {
    width: 8px; height: 8px; border-radius: 3px; display: inline-block;
}
.metric-row .m-val { font-size: 19px; font-weight: 700; }
.metric-row .m-val small { font-size: 12px; color: var(--muted); font-weight: 400; }
.bar { height: 6px; border-radius: 3px; background: rgba(255,255,255,.08); margin-top: 9px; overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: 3px; background: var(--grad-brand); }

/* ---------- CTA ---------- */
.cta-box {
    position: relative; overflow: hidden;
    border-radius: var(--radius-lg);
    padding: 80px 40px;
    text-align: center;
    background:
        radial-gradient(600px 300px at 50% -40%, rgba(47,224,138,.22), transparent 70%),
        linear-gradient(180deg, #0d1728, #080e1a);
    border: 1px solid var(--line-strong);
}
.cta-box h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin-bottom: 16px; }
.cta-box p { color: var(--text-soft); font-size: 17px; margin-bottom: 36px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-wechat {
    margin-top: 34px; display: inline-flex; align-items: center; gap: 10px;
    font-size: 15px; color: var(--text-soft);
}
.cta-wechat b { color: var(--brand); font-size: 18px; letter-spacing: 1px; }

/* ---------- 页脚 ---------- */
.footer {
    border-top: 1px solid var(--line);
    background: #05080f;
    padding: 64px 0 30px;
    margin-top: 40px;
}
.footer-grid {
    display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 40px; margin-bottom: 48px;
}
.footer-brand p { color: var(--muted); font-size: 14px; margin: 16px 0; max-width: 300px; }
.footer h5 { font-size: 14.5px; color: #fff; margin-bottom: 18px; font-weight: 600; }
.footer li { margin-bottom: 11px; }
.footer li a { color: var(--muted); font-size: 14px; transition: color .2s; }
.footer li a:hover { color: var(--brand); }
.footer-bottom {
    border-top: 1px solid var(--line);
    padding-top: 26px; text-align: center;
}
.footer-bottom .beian { font-size: 13.5px; color: var(--muted); margin-bottom: 10px; }
.footer-bottom .beian a { color: var(--muted); }
.footer-bottom .beian a:hover { color: var(--brand); }
.footer-contact { font-size: 13.5px; color: var(--muted); margin-bottom: 12px; }
.footer-contact b { color: var(--brand); letter-spacing: 1px; }
.stats-bar { display: flex; justify-content: center; gap: 26px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.stats-bar b { color: var(--text-soft); font-weight: 600; }

/* ============================================================
   产品详情页
   ============================================================ */
.p-hero {
    position: relative; padding: 150px 0 90px; overflow: hidden;
}
.p-hero-bg { position: absolute; inset: 0; z-index: 0; }
.p-hero-bg::before {
    content: ""; position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 52px 52px;
    mask-image: radial-gradient(ellipse 80% 70% at 30% 20%, #000, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 30% 20%, #000, transparent 75%);
}
.crumb { font-size: 13.5px; color: var(--muted); margin-bottom: 26px; position: relative; z-index: 2; }
.crumb a:hover { color: var(--brand); }
.crumb span { margin: 0 9px; opacity: .5; }

.p-hero-grid {
    display: grid; grid-template-columns: 1.05fr .95fr;
    gap: 60px; align-items: center;
    position: relative; z-index: 2;
}
.p-hero-tag {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 13px; font-weight: 600; letter-spacing: 1px;
    padding: 6px 15px; border-radius: 999px; margin-bottom: 22px;
}
.p-hero h1 { font-size: clamp(32px, 4.4vw, 50px); font-weight: 800; line-height: 1.2; margin-bottom: 20px; }
.p-hero .lead { font-size: 17.5px; color: var(--text-soft); margin-bottom: 32px; }
.p-hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.p-spec-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.p-spec-chips span {
    display: inline-flex; align-items: center; gap: 7px;
    font-size: 13px; color: var(--text-soft);
    background: rgba(255,255,255,0.05); border: 1px solid var(--line);
    padding: 7px 14px; border-radius: 999px;
}
.p-spec-chips svg { width: 13px; height: 13px; }

/* Hero 可视化面板（纯 CSS 模型） */
.p-visual {
    border-radius: var(--radius-lg);
    border: 1px solid var(--line-strong);
    background: linear-gradient(180deg, rgba(18,27,45,.9), rgba(9,15,27,.95));
    box-shadow: 0 40px 90px rgba(0,0,0,.5);
    padding: 20px;
    position: relative;
}
.p-visual::after {
    content: ""; position: absolute; inset: -1px; border-radius: inherit;
    background: linear-gradient(135deg, rgba(255,255,255,.14), transparent 35%);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    padding: 1px; pointer-events: none;
}
.win-bar { display: flex; gap: 6px; margin-bottom: 16px; }
.win-bar i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.16); }
.win-bar i:first-child { background: #ff5f57; }
.win-bar i:nth-child(2) { background: #febc2e; }
.win-bar i:nth-child(3) { background: #28c840; }

/* TV 桌面模型 */
.mock-tv-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 12px; }
.mock-screen {
    aspect-ratio: 16/10; border-radius: 12px; position: relative; overflow: hidden;
    background:
        radial-gradient(120% 100% at 20% 0%, rgba(47,224,138,.35), transparent 55%),
        linear-gradient(135deg, #10233a, #0a1424);
    display: grid; align-content: end; padding: 14px;
}
.mock-screen .live {
    position: absolute; top: 12px; left: 12px;
    display: inline-flex; align-items: center; gap: 6px;
    background: rgba(244,63,94,.9); color: #fff;
    font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 5px;
}
.mock-screen .live i { width: 6px; height: 6px; border-radius: 50%; background: #fff; }
.mock-screen .ch { font-size: 15px; font-weight: 700; }
.mock-screen .epg { font-size: 11.5px; color: rgba(255,255,255,.7); }
.mock-side { display: grid; gap: 10px; }
.mock-tile {
    border-radius: 10px; padding: 12px;
    background: rgba(255,255,255,.06); border: 1px solid var(--line);
    font-size: 12.5px; display: flex; align-items: center; gap: 9px;
}
.mock-tile i { width: 26px; height: 26px; border-radius: 7px; background: rgba(47,224,138,.2); flex: none; display: grid; place-items: center; font-style: normal; font-size: 12px; }
.mock-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; margin-top: 12px; }
.mock-app {
    aspect-ratio: 1; border-radius: 12px;
    background: rgba(255,255,255,.06); border: 1px solid var(--line);
    display: grid; place-items: center; font-size: 18px;
}

/* 网关模型 */
.gw-flow { padding: 10px 0; }
.gw-line { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.gw-node {
    flex: 1; text-align: center; padding: 12px 8px;
    border-radius: 10px; font-size: 12px;
    background: rgba(255,255,255,.06); border: 1px solid var(--line);
}
.gw-node b { display: block; font-size: 13px; margin-bottom: 2px; }
.gw-node.in b { color: var(--cyan); }
.gw-node.core { background: rgba(47,224,138,.12); border-color: rgba(47,224,138,.35); }
.gw-node.core b { color: var(--brand); }
.gw-node.out b { color: var(--violet); }
.gw-arrow { color: var(--muted); font-size: 15px; flex: none; }
.gw-log {
    background: rgba(0,0,0,.35); border-radius: 10px; padding: 13px 15px;
    font-family: Consolas, monospace; font-size: 11.5px; line-height: 1.9;
    color: var(--text-soft);
}
.gw-log .ok { color: var(--brand); }
.gw-log .info { color: var(--cyan); }

/* SIP 模型 */
.sip-mock { padding: 6px 0; }
.sip-call {
    display: flex; align-items: center; gap: 13px;
    background: rgba(255,255,255,.05); border: 1px solid var(--line);
    border-radius: 13px; padding: 14px 16px; margin-bottom: 12px;
}
.avatar {
    width: 42px; height: 42px; border-radius: 50%; flex: none;
    background: var(--grad-brand); color: #04120b;
    display: grid; place-items: center; font-weight: 800; font-size: 16px;
}
.sip-call .who { flex: 1; }
.sip-call .who b { font-size: 14px; display: block; }
.sip-call .who small { color: var(--muted); font-size: 12px; }
.sip-status { font-size: 11.5px; color: var(--brand); display: flex; align-items: center; gap: 5px; }
.sip-status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); animation: pulse 1.6s infinite; }
.dial-pad { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; }
.dial-pad span {
    text-align: center; padding: 10px 0; border-radius: 9px;
    background: rgba(255,255,255,.05); border: 1px solid var(--line);
    font-size: 14px; font-weight: 600;
}
.dial-pad span.call { grid-column: span 3; background: rgba(47,224,138,.15); border-color: rgba(47,224,138,.4); color: var(--brand); }

/* 投屏模型 */
.cast-mock { position: relative; }
.cast-tv {
    aspect-ratio: 16/10; border-radius: 12px;
    background: radial-gradient(100% 100% at 50% 0%, rgba(244,114,182,.3), transparent 60%), linear-gradient(135deg,#1b1230,#0e0a1c);
    border: 1px solid rgba(244,114,182,.3);
    display: grid; place-items: center; position: relative; overflow: hidden;
}
.cast-tv .big { font-size: 34px; }
.cast-tv small { position: absolute; bottom: 12px; color: rgba(255,255,255,.65); font-size: 11.5px; }
.cast-phone {
    position: absolute; right: -8px; bottom: -14px;
    width: 76px; height: 130px; border-radius: 14px;
    background: #0c1425; border: 1px solid var(--line-strong);
    box-shadow: 0 16px 40px rgba(0,0,0,.5);
    display: grid; place-items: center; font-size: 22px;
}
.cast-wave {
    position: absolute; left: 50%; top: 46%; transform: translate(-50%,-50%);
    width: 70px; height: 70px; border-radius: 50%;
    border: 2px solid rgba(244,114,182,.6);
    animation: ripple 2.2s ease-out infinite;
}
@keyframes ripple {
    0% { transform: translate(-50%,-50%) scale(.4); opacity: 1; }
    100% { transform: translate(-50%,-50%) scale(1.8); opacity: 0; }
}

/* AI 模型 */
.ai-mock { text-align: center; padding: 14px 10px; }
.ai-orb {
    width: 150px; height: 150px; margin: 6px auto 22px;
    border-radius: 50%; position: relative;
    background: radial-gradient(circle at 32% 30%, #a78bfa, #6d28d9 60%, #312e81);
    box-shadow: 0 0 60px rgba(139,92,246,.45), inset 0 0 40px rgba(255,255,255,.15);
    display: grid; place-items: center;
    animation: breathe 3s ease-in-out infinite;
}
@keyframes breathe { 0%,100% { transform: scale(1); } 50% { transform: scale(1.05); } }
.ai-orb::before, .ai-orb::after {
    content: ""; position: absolute; inset: -14px;
    border: 1px solid rgba(167,139,250,.4); border-radius: 50%;
}
.ai-orb::after { inset: -30px; border-color: rgba(167,139,250,.2); }
.ai-orb svg { width: 44px; height: 44px; color: #fff; position: relative; z-index: 2; }
.ai-bubble {
    background: rgba(255,255,255,.06); border: 1px solid var(--line);
    border-radius: 12px 12px 12px 3px; padding: 11px 15px;
    text-align: left; font-size: 12.5px; color: var(--text-soft);
}
.ai-wave { display: flex; gap: 4px; justify-content: center; margin-top: 14px; height: 22px; align-items: center; }
.ai-wave i {
    width: 4px; border-radius: 2px; background: var(--violet);
    animation: wave 1.1s ease-in-out infinite;
}
.ai-wave i:nth-child(1){ height: 9px; animation-delay:0s }
.ai-wave i:nth-child(2){ height: 18px; animation-delay:.12s }
.ai-wave i:nth-child(3){ height: 13px; animation-delay:.24s }
.ai-wave i:nth-child(4){ height: 20px; animation-delay:.36s }
.ai-wave i:nth-child(5){ height: 11px; animation-delay:.48s }
@keyframes wave { 0%,100%{ transform: scaleY(.5) } 50%{ transform: scaleY(1) } }

/* 功能网格 */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feat {
    background: var(--bg-card); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 30px 28px;
    transition: transform .3s, border-color .3s, background .3s;
}
.feat:hover { transform: translateY(-5px); border-color: var(--line-strong); background: var(--bg-card-hover); }
.feat .f-ico {
    width: 48px; height: 48px; border-radius: 13px;
    display: grid; place-items: center; margin-bottom: 18px;
}
.feat .f-ico svg { width: 23px; height: 23px; }
.feat h3 { font-size: 17.5px; margin-bottom: 9px; }
.feat p { font-size: 14px; color: var(--text-soft); }

/* 规格表 */
.spec-table {
    width: 100%; border-collapse: collapse;
    background: var(--bg-card);
    border: 1px solid var(--line); border-radius: var(--radius);
    overflow: hidden;
}
.spec-table th, .spec-table td {
    padding: 16px 24px; text-align: left;
    border-bottom: 1px solid var(--line);
    font-size: 14.5px;
}
.spec-table tr:last-child td { border-bottom: none; }
.spec-table th {
    width: 26%; color: var(--text-soft); font-weight: 500;
    background: rgba(255,255,255,.03);
}
.spec-table td b { color: var(--text); font-weight: 600; }

/* 场景 */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card {
    border-radius: var(--radius); padding: 32px 28px;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
    transition: transform .3s, border-color .3s;
}
.case-card:hover { transform: translateY(-5px); border-color: var(--line-strong); }
.case-card .case-emoji { font-size: 30px; display: block; margin-bottom: 16px; }
.case-card h3 { font-size: 18px; margin-bottom: 10px; }
.case-card p { font-size: 14px; color: var(--text-soft); margin-bottom: 14px; }
.case-card ul { display: grid; gap: 7px; }
.case-card li { font-size: 13.5px; color: var(--text-soft); padding-left: 20px; position: relative; }
.case-card li::before {
    content: ""; position: absolute; left: 0; top: 8px;
    width: 8px; height: 8px; border-radius: 2px;
    background: var(--grad-brand);
}

/* 相关产品 */
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.rel-card {
    display: flex; gap: 13px; align-items: center;
    background: var(--bg-card); border: 1px solid var(--line);
    border-radius: 14px; padding: 18px 20px;
    transition: transform .25s, border-color .25s, background .25s;
}
.rel-card:hover { transform: translateY(-3px); border-color: var(--line-strong); background: var(--bg-card-hover); }
.rel-card .r-ico {
    width: 40px; height: 40px; border-radius: 11px; flex: none;
    display: grid; place-items: center;
}
.rel-card .r-ico svg { width: 19px; height: 19px; }
.rel-card b { font-size: 14.5px; display: block; }
.rel-card small { font-size: 12.5px; color: var(--muted); }

/* 产品页主题色（各页在 body 上以 CSS 变量覆盖） */
.p-hero-bg .p-orb {
    position: absolute; border-radius: 50%;
    filter: blur(100px); opacity: .28; pointer-events: none;
}
.p-hero-bg .p-orb.o1 { width: 520px; height: 520px; top: -160px; right: -120px; background: var(--accent-glow); }
.p-hero-bg .p-orb.o2 { width: 380px; height: 380px; bottom: -160px; left: -100px; background: var(--accent-glow); opacity: .16; }

.page-accent .p-hero-tag {
    color: var(--accent);
    background: var(--accent-bg);
    border: 1px solid var(--accent-border);
}
.page-accent .section-tag { color: var(--accent); }
.page-accent .f-ico { background: var(--accent-bg); color: var(--accent); }
.page-accent .p-spec-chips svg { color: var(--accent); }
.page-accent .case-card li::before { background: var(--accent); }
.page-accent .btn-primary {
    background: linear-gradient(135deg, var(--accent-2, #35c6ff), var(--accent));
    box-shadow: 0 8px 30px var(--accent-shadow);
}
.page-accent .btn-primary:hover { box-shadow: 0 14px 44px var(--accent-shadow); }
.page-accent .grad-text {
    background: linear-gradient(135deg, var(--accent-2, #35c6ff), var(--accent));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.page-accent .r-ico { background: var(--accent-bg); color: var(--accent); }
.page-accent .footer-contact b,
.page-accent .cta-wechat b { color: var(--accent); }

/* 深色区块背景交替 */
.alt-bg {
    background:
        radial-gradient(900px 400px at 50% -10%, rgba(53,198,255,.06), transparent 70%),
        var(--bg-soft);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

/* ---------- 滚动入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .p-card, .p-card.wide { grid-column: span 1; }
    .solution-grid, .related-grid { grid-template-columns: repeat(2, 1fr); }
    .feat-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
    .why-wrap { grid-template-columns: 1fr; gap: 44px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .p-hero-grid { grid-template-columns: 1fr; gap: 48px; }
    .suite-diagram { grid-template-columns: 1fr; }
    .suite-link { transform: rotate(90deg); margin: -6px auto; }
}

@media (max-width: 720px) {
    .section { padding: 70px 0; }
    .nav-toggle { display: block; }
    .nav-menu {
        position: fixed; top: 70px; left: 0; right: 0;
        flex-direction: column; align-items: stretch;
        background: rgba(6,10,19,.97); backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--line);
        padding: 14px 20px 24px; gap: 4px;
        max-height: calc(100vh - 70px); overflow-y: auto;
        display: none;
    }
    .nav-menu.open { display: flex; }
    .nav-menu > li > a { padding: 13px 15px; font-size: 16px; }
    .nav-dropdown {
        position: static; transform: none; width: 100%;
        opacity: 1; visibility: visible; pointer-events: auto;
        background: transparent; border: none; box-shadow: none;
        padding: 0 0 6px 14px; display: none;
    }
    .nav-menu > li.show-dd .nav-dropdown { display: block; }
    .nav-cta { margin: 10px 0 0; text-align: center; justify-content: center; display: flex; }
    .hero { padding: 130px 0 80px; }
    .hero-stats { gap: 34px; }
    .products-grid, .solution-grid, .feat-grid, .case-grid,
    .related-grid, .footer-grid { grid-template-columns: 1fr; }
    .suite-box { padding: 36px 20px; }
    .mock-tv-grid { grid-template-columns: 1fr; }
    .p-hero { padding: 120px 0 60px; }
    .spec-table th { width: 36%; }
    .gw-line { flex-wrap: wrap; }
}