/* ==========================================================================
   新世界机房之家 · 官网样式
   ========================================================================== */
:root {
    --navy: #041726;
    --navy-2: #06263d;
    --navy-3: #083a56;
    --blue: #1a8fe0;
    --blue-deep: #0c6cad;
    --cyan: #35cfe8;
    --orange: #ff8a1f;
    --ink: #0d2433;
    --muted: #617a8c;
    --line: #e2ebf1;
    --bg: #f4f8fb;
    --card: #ffffff;
    --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC",
        -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --mono: "SFMono-Regular", "JetBrains Mono", Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font);
    font-size: 15px;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    line-height: 1.65;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, h4, p, ul { margin: 0; }
ul { list-style: none; padding: 0; }
button, input, select, textarea { font-family: inherit; }

.container { width: min(1200px, 92vw); margin: 0 auto; }

/* ---------- 顶部公告条 ---------- */
.top-note {
    background: #061d2d;
    color: #8fb6cc;
    font-size: 13px;
    border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.top-note .container {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 36px;
}
.top-note .tag {
    flex: 0 0 auto;
    padding: 0 7px;
    line-height: 18px;
    font-size: 11px;
    color: #ffb85c;
    border: 1px solid rgba(255, 154, 46, .45);
    border-radius: 3px;
}
.top-note strong { color: #e8f4fb; font-weight: 600; }
.top-note a { margin-left: auto; color: #ffb85c; white-space: nowrap; }
.top-note a:hover { color: #ffd39a; }

/* ---------- 导航 ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(4, 20, 33, .92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(126, 196, 226, .14);
    color: #dbeaf4;
}
.nav-inner {
    display: flex;
    align-items: center;
    gap: 34px;
    height: 74px;
}
.brand { display: flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 11px;
    background: linear-gradient(140deg, #2aa9ef, #0a5c93);
    box-shadow: 0 8px 22px rgba(20, 138, 214, .35), inset 0 1px 0 rgba(255, 255, 255, .35);
    display: grid;
    place-items: center;
}
.brand-mark svg { width: 24px; height: 24px; }
.brand-text { line-height: 1.15; }
.brand-text b {
    display: block;
    font-size: 18px;
    letter-spacing: .06em;
    color: #fff;
}
.brand-text span {
    font-size: 10px;
    letter-spacing: .22em;
    color: #6fa7c4;
}
.nav-links { display: flex; align-items: center; gap: 26px; font-size: 14px; }
.nav-links a { color: #a9c6d8; padding: 6px 0; position: relative; }
.nav-links a::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -2px;
    height: 2px;
    background: linear-gradient(90deg, var(--cyan), var(--blue));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .22s ease;
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav-login { font-size: 14px; color: #cfe5f2; padding: 8px 12px; }
.nav-login:hover { color: #fff; }
.nav-user {
    display: flex; align-items: center; gap: 8px;
    font-size: 13px; color: #d8ecf7;
}
.nav-user .avatar {
    width: 30px; height: 30px; border-radius: 50%;
    background: linear-gradient(135deg, #27a7e8, #0d5d90);
    display: grid; place-items: center;
    font-size: 13px; color: #fff; font-weight: 600;
}
.nav-toggle {
    display: none;
    width: 38px; height: 38px;
    border: 1px solid rgba(255, 255, 255, .2);
    border-radius: 8px;
    background: transparent;
    color: #fff;
    cursor: pointer;
}
.nav-toggle span { display: block; width: 18px; height: 2px; margin: 0 auto; background: #d8eaf5; position: relative; }
.nav-toggle span::before,
.nav-toggle span::after {
    content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: #d8eaf5;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: 9px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: transform .18s ease, box-shadow .18s ease, filter .18s ease;
    white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
    background: linear-gradient(135deg, #1e9df0, #0c6cb2);
    color: #fff;
    box-shadow: 0 10px 26px rgba(15, 116, 190, .32);
}
.btn-primary:hover { box-shadow: 0 14px 30px rgba(15, 116, 190, .42); }
.btn-orange {
    background: linear-gradient(135deg, #ffa63c, #ff7a08);
    color: #fff;
    box-shadow: 0 10px 26px rgba(240, 122, 12, .32);
}
.btn-orange:hover { box-shadow: 0 14px 30px rgba(240, 122, 12, .42); }
.btn-ghost {
    background: transparent;
    border-color: rgba(173, 216, 240, .34);
    color: #e3f2fa;
}
.btn-ghost:hover { background: rgba(255, 255, 255, .06); }
.btn-sm { height: 34px; padding: 0 14px; font-size: 13px; border-radius: 6px; }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    overflow: hidden;
    color: #d6e8f3;
    background:
        radial-gradient(820px 460px at 82% 6%, rgba(27, 143, 224, .34), transparent 62%),
        radial-gradient(700px 420px at 4% 96%, rgba(53, 207, 232, .16), transparent 60%),
        linear-gradient(155deg, #031320 0%, #06243a 52%, #083b58 100%);
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(130, 195, 230, .055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(130, 195, 230, .055) 1px, transparent 1px);
    background-size: 72px 72px;
    -webkit-mask-image: radial-gradient(ellipse at 60% 30%, #000 25%, transparent 78%);
    mask-image: radial-gradient(ellipse at 60% 30%, #000 25%, transparent 78%);
    pointer-events: none;
}
.hero::after {
    content: "";
    position: absolute;
    width: 560px; height: 560px;
    right: -140px; top: -220px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(48, 174, 238, .22), transparent 68%);
    pointer-events: none;
}
.hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.12fr .88fr;
    gap: 56px;
    align-items: center;
    padding: 78px 0 62px;
}
.hero-copy .pill {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    height: 34px;
    padding: 0 14px;
    border-radius: 20px;
    border: 1px solid rgba(109, 206, 250, .3);
    background: rgba(15, 94, 145, .28);
    font-size: 13px;
    color: #9fd9f3;
    letter-spacing: .02em;
}
.hero-copy .pill .dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: #3be6a0;
    box-shadow: 0 0 0 4px rgba(59, 230, 160, .16);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 3px rgba(59, 230, 160, .18); }
    50% { box-shadow: 0 0 0 8px rgba(59, 230, 160, .03); }
}
.hero h1 {
    margin: 24px 0 0;
    font-size: clamp(38px, 4.1vw, 58px);
    line-height: 1.18;
    letter-spacing: -.01em;
    color: #fff;
    font-weight: 700;
}
.hero h1 em {
    font-style: normal;
    background: linear-gradient(100deg, #63e3f5 10%, #4aa9ff 60%, #a8e7ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero-sub {
    margin-top: 20px;
    max-width: 590px;
    font-size: 15.5px;
    line-height: 1.85;
    color: #9db9ca;
}
.hero-price {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin-top: 26px;
    color: #fff;
}
.hero-price .cur { font-size: 20px; color: #ffb45c; }
.hero-price strong { font-size: 46px; line-height: 1; font-family: var(--mono); color: #ffb45c; letter-spacing: -.02em; }
.hero-price .unit { font-size: 14px; color: #8fb0c4; }
.hero-price .hint {
    margin-left: 14px;
    padding-left: 14px;
    border-left: 1px solid rgba(255, 255, 255, .16);
    font-size: 13px;
    color: #8fb0c4;
}
.hero-cta { display: flex; align-items: center; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin-top: 30px;
    font-size: 13px;
    color: #8aa9bc;
}
.hero-trust li { display: flex; align-items: center; gap: 7px; }
.hero-trust li::before {
    content: "";
    width: 14px; height: 14px;
    border-radius: 50%;
    background: rgba(53, 207, 232, .12);
    border: 1px solid rgba(53, 207, 232, .5);
    box-shadow: inset 0 0 0 3px rgba(3, 25, 39, .9);
}

/* ---------- 三网质量卡 ---------- */
.net-card {
    position: relative;
    padding: 20px 20px 17px;
    border-radius: 18px;
    background: linear-gradient(165deg, rgba(11, 48, 72, .92), rgba(5, 28, 44, .92));
    border: 1px solid rgba(92, 190, 240, .26);
    box-shadow: 0 30px 70px rgba(0, 0, 0, .38), inset 0 1px 0 rgba(255, 255, 255, .06);
}
.net-card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: #cfe7f4;
    padding-bottom: 6px;
}
.net-card-head .live {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 10px;
    letter-spacing: .16em;
    color: #4fe3ae;
    font-family: var(--mono);
}
.net-card-head .live i {
    width: 6px; height: 6px; border-radius: 50%;
    background: #4fe3ae;
    animation: pulse 1.8s infinite;
}
.net-map { width: 100%; height: auto; margin-top: 6px; }
.net-map .flow { stroke-dasharray: 6 8; animation: dash 2.6s linear infinite; }
.net-map .flow-2 { animation-delay: .35s; }
.net-map .flow-3 { animation-delay: .7s; }
@keyframes dash { to { stroke-dashoffset: -28; } }
.net-rows { display: grid; gap: 11px; margin-top: 4px; }
.net-row {
    display: grid;
    grid-template-columns: 76px 1fr 44px;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    color: #9fbfd2;
}
.net-row strong { font-family: var(--mono); font-size: 13px; color: #e8f7ff; text-align: right; font-weight: 600; }
.meter {
    height: 6px;
    border-radius: 4px;
    background: rgba(255, 255, 255, .07);
    overflow: hidden;
}
.meter i {
    display: block;
    height: 100%;
    border-radius: 4px;
    background: linear-gradient(90deg, #2ea1e2, #59e0f2);
}
.meter.m-orange i { background: linear-gradient(90deg, #f08a1e, #ffc46b); }
.meter.m-teal i { background: linear-gradient(90deg, #17b98b, #5be8b8); }
.net-foot {
    margin-top: 14px;
    padding-top: 11px;
    border-top: 1px dashed rgba(126, 190, 218, .2);
    font-size: 11px;
    color: #6d94aa;
    letter-spacing: .02em;
}

/* ---------- 数据条 ---------- */
.stat-strip {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid rgba(120, 190, 225, .16);
    padding: 26px 0 34px;
}
.stat-item { padding: 0 26px; border-left: 1px solid rgba(120, 190, 225, .14); }
.stat-item:first-child { border-left: 0; padding-left: 0; }
.stat-item b {
    display: block;
    font-family: var(--mono);
    font-size: 30px;
    line-height: 1.2;
    color: #fff;
    letter-spacing: -.02em;
}
.stat-item b span { font-size: 14px; margin-left: 3px; color: #7fb9d5; font-family: var(--font); }
.stat-item p { font-size: 12.5px; color: #7e9fb3; margin-top: 4px; }

/* ---------- 区块通用 ---------- */
.section { padding: 84px 0; }
.section.tint { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 680px; margin-bottom: 44px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .2em;
    color: var(--blue-deep);
    text-transform: uppercase;
}
.eyebrow::before {
    content: "";
    width: 22px; height: 2px;
    background: linear-gradient(90deg, var(--orange), #ffc069);
}
.section-head.center .eyebrow { justify-content: center; }
.section-head h2 {
    margin-top: 14px;
    font-size: clamp(28px, 3vw, 38px);
    line-height: 1.25;
    letter-spacing: -.01em;
    color: var(--ink);
}
.section-head p { margin-top: 14px; color: var(--muted); font-size: 15px; line-height: 1.8; }

/* ---------- 三网直连 ---------- */
.net-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.net-tile {
    position: relative;
    padding: 30px 28px 26px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: 0 2px 6px rgba(13, 45, 66, .03);
    transition: transform .25s ease, box-shadow .25s ease;
    overflow: hidden;
}
.net-tile::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--tint, #1a8fe0), transparent 85%);
}
.net-tile:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(16, 62, 92, .1); }
.net-tile.ct { --tint: #2f7fe0; }
.net-tile.cm { --tint: #17b98b; }
.net-tile.cu { --tint: #ff8a1f; }
.net-tile .carrier {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--muted);
}
.net-tile .carrier .route {
    padding: 3px 9px;
    border-radius: 4px;
    background: #f2f7fb;
    border: 1px solid #e1ebf3;
    font-family: var(--mono);
    font-size: 11.5px;
    color: #47697e;
    letter-spacing: .03em;
}
.net-tile h3 { margin-top: 16px; font-size: 20px; color: var(--ink); }
.net-tile .latency {
    display: flex;
    align-items: baseline;
    gap: 5px;
    margin-top: 10px;
    color: var(--tint);
}
.net-tile .latency b { font-family: var(--mono); font-size: 34px; line-height: 1; }
.net-tile .latency span { font-size: 13px; color: var(--muted); }
.net-tile ul { margin-top: 18px; display: grid; gap: 9px; }
.net-tile li {
    position: relative;
    padding-left: 18px;
    font-size: 13px;
    color: #4d6a7c;
}
.net-tile li::before {
    content: "";
    position: absolute;
    left: 0; top: 8px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--tint);
    opacity: .75;
}
.net-extra {
    margin-top: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 24px;
    border-radius: 12px;
    background: linear-gradient(100deg, #06253a, #0a3d5b);
    color: #b9d7e7;
    font-size: 13.5px;
}
.net-extra .badge {
    flex: 0 0 auto;
    padding: 4px 10px;
    border-radius: 4px;
    border: 1px solid rgba(255, 178, 84, .4);
    color: #ffbe6f;
    font-size: 12px;
    letter-spacing: .04em;
}
.net-extra b { color: #fff; }

/* ---------- 价格 ---------- */
.plans {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    align-items: stretch;
}
.plan {
    display: flex;
    flex-direction: column;
    padding: 28px 24px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: 0 2px 6px rgba(13, 45, 66, .03);
    position: relative;
    transition: transform .25s ease, box-shadow .25s ease;
}
.plan:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(16, 62, 92, .1); }
.plan.featured {
    background: linear-gradient(165deg, #062a41, #0a3f5c);
    border-color: #0a4f72;
    color: #d8ebf5;
    box-shadow: 0 20px 46px rgba(6, 40, 62, .3);
}
.plan.featured:hover { box-shadow: 0 26px 54px rgba(6, 40, 62, .4); }
.plan .flag {
    position: absolute;
    top: 18px; right: 18px;
    padding: 3px 9px;
    border-radius: 20px;
    font-size: 11px;
    color: #fff;
    background: linear-gradient(120deg, #ff9a2e, #ff7a08);
    box-shadow: 0 6px 14px rgba(240, 122, 12, .3);
}
.plan h3 { font-size: 18px; letter-spacing: .01em; }
.plan .sub { margin-top: 5px; font-size: 12.5px; color: var(--muted); }
.plan.featured .sub { color: #85aec3; }
.plan .price { margin-top: 20px; display: flex; align-items: baseline; gap: 3px; }
.plan .price .cur { font-size: 16px; color: var(--orange); }
.plan .price b { font-family: var(--mono); font-size: 34px; line-height: 1; color: var(--ink); letter-spacing: -.02em; }
.plan.featured .price b { color: #fff; }
.plan .price span { font-size: 12.5px; color: var(--muted); }
.plan.featured .price span { color: #85aec3; }
.plan .specs {
    margin: 22px 0 26px;
    padding-top: 18px;
    border-top: 1px dashed #e3ecf2;
    display: grid;
    gap: 10px;
    font-size: 13px;
    color: #48657a;
}
.plan.featured .specs { border-top-color: rgba(140, 195, 220, .22); color: #a9c6d6; }
.plan .specs li { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.plan .specs li span { color: #8ba0ae; font-size: 12px; }
.plan.featured .specs li span { color: #7ea3b9; }
.plan .btn { width: 100%; margin-top: auto; height: 42px; font-size: 14px; border-radius: 8px; }
.plan.featured .btn-primary {
    background: linear-gradient(135deg, #ffa63c, #ff7a08);
    box-shadow: 0 10px 24px rgba(240, 122, 12, .3);
}
.plans-note {
    margin-top: 22px;
    text-align: center;
    font-size: 12.5px;
    color: var(--muted);
}

/* ---------- 优势 ---------- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: 16px;
    overflow: hidden;
}
.feature {
    background: #fff;
    padding: 32px 30px;
    transition: background .2s ease;
}
.feature:hover { background: #fbfdff; }
.feature .ico {
    width: 42px; height: 42px;
    border-radius: 11px;
    display: grid;
    place-items: center;
    background: linear-gradient(140deg, #e9f5fd, #f4f9fc);
    border: 1px solid #dbeaf4;
    color: var(--blue-deep);
}
.feature .ico svg { width: 20px; height: 20px; }
.feature h3 { margin-top: 16px; font-size: 16.5px; }
.feature p { margin-top: 8px; font-size: 13.5px; color: var(--muted); line-height: 1.8; }

/* ---------- 机房 ---------- */
.dc {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(700px 380px at 88% 12%, rgba(26, 143, 224, .28), transparent 60%),
        linear-gradient(150deg, #041a2b, #07344e 60%, #0a4969);
    color: #c9e2ee;
    padding: 80px 0 86px;
}
.dc::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(120, 190, 225, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(120, 190, 225, .05) 1px, transparent 1px);
    background-size: 56px 56px;
    pointer-events: none;
}
.dc-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.dc .eyebrow { color: #6ec9e8; }
.dc h2 { margin-top: 14px; font-size: clamp(28px, 3vw, 38px); color: #fff; line-height: 1.25; }
.dc-lead { margin-top: 16px; font-size: 14.5px; color: #9dbfd0; line-height: 1.85; max-width: 480px; }
.dc-list { margin-top: 26px; display: grid; gap: 13px; }
.dc-list li {
    display: flex;
    gap: 12px;
    font-size: 13.5px;
    color: #b5d3e2;
    line-height: 1.65;
}
.dc-list li::before {
    content: "";
    flex: 0 0 auto;
    width: 6px; height: 6px;
    margin-top: 8px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 0 4px rgba(53, 207, 232, .12);
}
.dc-panel {
    border: 1px solid rgba(102, 190, 230, .24);
    border-radius: 16px;
    background: rgba(4, 26, 43, .55);
    padding: 26px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, .25);
}
.dc-panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12.5px;
    color: #8fb9cd;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(120, 190, 225, .16);
}
.dc-panel-head b { color: #fff; font-size: 13.5px; letter-spacing: .04em; }
.dc-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: rgba(120, 190, 225, .16);
    margin-top: 0;
    border: 1px solid rgba(120, 190, 225, .16);
    border-radius: 10px;
    overflow: hidden;
    margin-top: 18px;
}
.dc-spec {
    background: rgba(6, 33, 52, .92);
    padding: 18px 18px 16px;
}
.dc-spec b { display: block; font-family: var(--mono); font-size: 22px; color: #58d8f0; line-height: 1.2; }
.dc-spec span { font-size: 12px; color: #7fa5b8; }

/* ---------- 动态 / 支持 ---------- */
.news-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, .55fr);
    gap: 24px;
    align-items: start;
}
.notice-panel {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 10px 28px;
}
.notice-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 17px 0;
    border-bottom: 1px solid #edf3f7;
    font-size: 14px;
}
.notice-row:last-child { border-bottom: 0; }
.notice-row .tag {
    flex: 0 0 auto;
    width: 42px;
    text-align: center;
    padding: 2px 0;
    font-size: 11.5px;
    border-radius: 4px;
    background: #eef7fd;
    border: 1px solid #d8eaf6;
    color: #1a7ba8;
}
.notice-row .tag.warn { background: #fff5ea; border-color: #ffe0bc; color: #b56a00; }
.notice-row .title { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #2c4757; }
.notice-row .date { margin-left: auto; flex: 0 0 auto; font-size: 12px; color: #90a3af; font-family: var(--mono); }
.support-card {
    background: linear-gradient(160deg, #06263d, #083d59);
    border-radius: 16px;
    padding: 30px 28px;
    color: #d8ebf5;
    box-shadow: 0 18px 40px rgba(6, 40, 62, .2);
}
.support-card h3 { font-size: 18px; color: #fff; }
.support-card p { margin-top: 10px; font-size: 13px; color: #9cbccd; line-height: 1.8; }
.support-card .line {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid rgba(140, 195, 220, .2);
    display: grid;
    gap: 8px;
    font-size: 12.5px;
    color: #8fb4c8;
}
.support-card .line b { color: #fff; font-weight: 600; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; max-width: 900px; margin: 0 auto; }
.faq details {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 0 22px;
    transition: border-color .2s ease;
}
.faq details[open] { border-color: #c9e2f2; box-shadow: 0 8px 24px rgba(16, 62, 92, .06); }
.faq summary {
    cursor: pointer;
    list-style: none;
    padding: 18px 30px 18px 0;
    font-size: 15px;
    font-weight: 600;
    color: #22404f;
    position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
    content: "+";
    position: absolute;
    right: 0; top: 15px;
    width: 24px; height: 24px;
    line-height: 22px;
    text-align: center;
    border-radius: 50%;
    border: 1px solid #cfe0ea;
    color: #6a8ba0;
    font-size: 15px;
    font-weight: 400;
    transition: .2s ease;
}
.faq details[open] summary::after {
    content: "−";
    background: var(--blue);
    border-color: var(--blue);
    color: #fff;
}
.faq .answer {
    padding: 0 0 20px;
    font-size: 13.5px;
    color: var(--muted);
    line-height: 1.9;
    border-top: 1px dashed #e6eef4;
    padding-top: 16px;
}

/* ---------- 页脚 ---------- */
.site-footer {
    background: #03141f;
    color: #7e9cac;
    padding: 58px 0 0;
    font-size: 13px;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.6fr repeat(3, 1fr);
    gap: 40px;
    padding-bottom: 46px;
}
.footer-brand .brand-text b { font-size: 17px; }
.footer-brand p {
    margin-top: 16px;
    max-width: 300px;
    font-size: 12.5px;
    line-height: 1.9;
    color: #6d8999;
}
.footer-col h4 { color: #c5dbe6; font-size: 13.5px; font-weight: 600; letter-spacing: .04em; }
.footer-col ul { margin-top: 15px; display: grid; gap: 9px; }
.footer-col a:hover, .footer-col li:hover { color: #bcdce9; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .07);
    padding: 18px 0 22px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 26px;
    align-items: center;
    font-size: 12px;
    color: #5b7889;
}
.footer-bottom .spacer { margin-left: auto; }

/* ---------- 登录 / 注册 ---------- */
.auth-wrap {
    min-height: calc(100vh - 110px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 4vw 76px;
    background:
        radial-gradient(760px 420px at 78% 10%, rgba(26, 143, 224, .1), transparent 60%),
        linear-gradient(180deg, #f4f8fb, #eef4f9);
}
.auth-card {
    width: min(100%, 430px);
    background: #fff;
    border: 1px solid #e0eaf1;
    border-radius: 16px;
    box-shadow: 0 30px 70px rgba(16, 62, 92, .12);
    padding: 38px 36px 34px;
}
.auth-card.wide { width: min(100%, 560px); }
.auth-head .eyebrow { font-size: 11px; }
.auth-head h1 { margin-top: 10px; font-size: 26px; color: var(--ink); letter-spacing: -.01em; }
.auth-head p { margin-top: 8px; font-size: 13px; color: var(--muted); }
.auth-form { margin-top: 26px; display: grid; gap: 16px; }
.field label {
    display: block;
    font-size: 12.5px;
    font-weight: 600;
    color: #57707f;
    margin-bottom: 7px;
}
.field label .req { color: #e2683c; font-weight: 400; margin-left: 3px; }
.field input, .field select, .field textarea {
    width: 100%;
    height: 44px;
    padding: 0 13px;
    border: 1px solid #d7e4ec;
    border-radius: 8px;
    background: #fbfdff;
    color: var(--ink);
    font-size: 14px;
    outline: none;
    transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.field textarea { height: auto; padding: 11px 13px; line-height: 1.7; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
    border-color: #52b0e8;
    background: #fff;
    box-shadow: 0 0 0 3px rgba(26, 143, 224, .12);
}
.field .hint { margin-top: 6px; font-size: 11.5px; color: #93a6b2; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.auth-form .btn { width: 100%; height: 46px; margin-top: 4px; }
.auth-alt {
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px dashed #e4edf3;
    font-size: 13px;
    color: var(--muted);
    text-align: center;
}
.auth-alt a { color: var(--blue-deep); font-weight: 600; }
.auth-alt a:hover { text-decoration: underline; }
.demo-hint {
    margin-top: 18px;
    border: 1px dashed #d7e8f3;
    background: #f7fbfe;
    border-radius: 8px;
    padding: 11px 14px;
    font-size: 12px;
    color: #5d7f92;
    line-height: 1.8;
}
.demo-hint b { color: #1a6e9e; font-family: var(--mono); }
.form-errors {
    margin-top: 18px;
    padding: 11px 14px;
    border: 1px solid #ffd9d5;
    background: #fff6f5;
    border-radius: 8px;
    font-size: 12.5px;
    color: #b53a2e;
    line-height: 1.8;
}
.form-errors ul { margin: 0; padding-left: 16px; list-style: disc; }
.auth-note {
    margin-top: 22px;
    font-size: 11.5px;
    color: #93a6b2;
    text-align: center;
    line-height: 1.8;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .nav-links { gap: 18px; }
    .hero-inner { grid-template-columns: 1fr; gap: 44px; }
    .hero-copy { max-width: 720px; }
    .net-card { max-width: 560px; }
    .plans { grid-template-columns: repeat(2, 1fr); }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .dc-inner { grid-template-columns: 1fr; gap: 40px; }
    .footer-top { grid-template-columns: 1fr 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 820px) {
    .top-note .container { gap: 8px; }
    .top-note a { display: none; }
    .nav-inner { gap: 16px; }
    .nav-links {
        position: absolute;
        top: 74px; left: 0; right: 0;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 8px 6vw 16px;
        background: rgba(4, 20, 33, .98);
        border-bottom: 1px solid rgba(126, 196, 226, .16);
    }
    .nav-links.open { display: flex; }
    .nav-links a { width: 100%; padding: 11px 0; border-bottom: 1px solid rgba(255, 255, 255, .05); }
    .nav-links a::after { display: none; }
    .nav-toggle { display: block; }
    .nav-actions .nav-login { display: none; }
    .nav-actions { margin-left: auto; }
    .hero-inner { padding: 52px 0 42px; }
    .hero h1 { font-size: clamp(32px, 8vw, 42px); }
    .hero-price strong { font-size: 38px; }
    .stat-strip { grid-template-columns: 1fr 1fr; gap: 22px 0; }
    .stat-item:nth-child(3) { border-left: 0; padding-left: 0; }
    .section { padding: 62px 0; }
    .net-grid { grid-template-columns: 1fr; }
    .plans { grid-template-columns: 1fr; }
    .feature-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .notice-row .title { white-space: normal; }
    .dc-specs { grid-template-columns: 1fr 1fr; }
    .footer-top { grid-template-columns: 1fr 1fr; gap: 30px; }
    .hero-price .hint { display: none; }
    .net-extra { flex-wrap: wrap; }
    .net-extra .badge { margin-bottom: 4px; }
}
@media (max-width: 520px) {
    .nav-user .uname { display: none; }
    .brand-text span { display: none; }
    .hero-price strong { font-size: 34px; }
    .hero-cta .btn { flex: 1 1 100%; }
    .stat-item { padding: 0 16px; }
    .stat-item b { font-size: 24px; }
    .dc-specs { grid-template-columns: 1fr; }
    .auth-card { padding: 30px 22px 26px; }
    .field-row { grid-template-columns: 1fr; }
    .plans-note { text-align: left; }
    .footer-top { grid-template-columns: 1fr; }
    .footer-bottom { font-size: 11px; }
}