/* ============================================================
   TDSI 服务状态站 · 主样式表
   设计基调：深空底色 + 液态玻璃 + 冰蓝高光
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
    /* 底色 */
    --bg-base: #05080f;
    --bg-deep: #070c17;
    --bg-raise: #0b1322;

    /* 玻璃层 */
    --glass-1: rgba(255, 255, 255, 0.035);
    --glass-2: rgba(255, 255, 255, 0.06);
    --glass-3: rgba(255, 255, 255, 0.09);
    --glass-border: rgba(255, 255, 255, 0.09);
    --glass-border-strong: rgba(255, 255, 255, 0.16);

    /* 文字 */
    --text-hi: #f2f7ff;
    --text-mid: #a9b8d0;
    --text-low: #6b7b96;

    /* 强调色 */
    --c-cyan: #22d3ee;
    --c-blue: #3b82f6;
    --c-indigo: #6366f1;
    --c-amber: #f5a524;
    --c-green: #34d399;
    --c-red: #f87171;

    /* 语义 */
    --c-pause: #f5a524;
    --c-online: #34d399;

    /* 光晕 */
    --glow-cyan: rgba(34, 211, 238, 0.28);
    --glow-amber: rgba(245, 165, 36, 0.25);
    --glow-indigo: rgba(99, 102, 241, 0.26);

    /* 圆角与节奏 */
    --r-sm: 10px;
    --r-md: 16px;
    --r-lg: 22px;
    --r-xl: 30px;
    --r-pill: 999px;

    /* 字体 */
    --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;

    /* 布局 */
    --maxw: 1180px;
    --nav-h: 68px;

    /* 缓动 */
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 浅色主题 ---------- */
html[data-theme="light"] {
    --bg-base: #eef3fb;
    --bg-deep: #f5f8fd;
    --bg-raise: #ffffff;

    --glass-1: rgba(255, 255, 255, 0.66);
    --glass-2: rgba(255, 255, 255, 0.8);
    --glass-3: rgba(255, 255, 255, 0.92);
    --glass-border: rgba(15, 32, 58, 0.09);
    --glass-border-strong: rgba(15, 32, 58, 0.16);

    --text-hi: #0b1a30;
    --text-mid: #43546e;
    --text-low: #7186a1;

    --glow-cyan: rgba(34, 211, 238, 0.18);
    --glow-amber: rgba(245, 165, 36, 0.18);
    --glow-indigo: rgba(99, 102, 241, 0.16);
}

/* ---------- 基础重置 ---------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-h) + 24px);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-base);
    color: var(--text-hi);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.4s var(--ease-soft), color 0.4s var(--ease-soft);
}

/* 背景氛围层：网格 + 双光斑 */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        radial-gradient(ellipse 60% 45% at 18% -5%, var(--glow-cyan), transparent 60%),
        radial-gradient(ellipse 55% 50% at 88% 8%, var(--glow-indigo), transparent 62%),
        radial-gradient(ellipse 70% 45% at 50% 105%, var(--glow-amber), transparent 65%),
        var(--bg-base);
    transition: background 0.5s var(--ease-soft);
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0.5;
    background-image:
        linear-gradient(rgba(148, 180, 220, 0.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 180, 220, 0.055) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 20%, #000 30%, transparent 78%);
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 20%, #000 30%, transparent 78%);
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
    color: inherit;
}

::selection {
    background: var(--c-cyan);
    color: #04121a;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--glass-border-strong);
    border-radius: var(--r-pill);
    border: 3px solid transparent;
    background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--c-cyan);
    background-clip: content-box;
}

/* ---------- 通用容器 ---------- */
.wrap {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 84px 0;
    position: relative;
}

.section--tight {
    padding: 56px 0;
}

/* ---------- 导航栏 ---------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-h);
    z-index: 100;
    display: flex;
    align-items: center;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    background: color-mix(in srgb, var(--bg-base) 72%, transparent);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s var(--ease-soft), background 0.3s var(--ease-soft);
}

.nav.is-scrolled {
    border-bottom-color: var(--glass-border);
    background: color-mix(in srgb, var(--bg-base) 88%, transparent);
}

.nav__inner {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.02rem;
    letter-spacing: -0.01em;
    flex-shrink: 0;
}

.brand img {
    width: 30px;
    height: 30px;
    border-radius: 9px;
    object-fit: cover;
    box-shadow: 0 0 0 1px var(--glass-border-strong);
}

.brand__sub {
    color: var(--text-low);
    font-weight: 500;
    font-size: 0.78rem;
    letter-spacing: 0.02em;
    padding-left: 10px;
    margin-left: 2px;
    border-left: 1px solid var(--glass-border);
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
    list-style: none;
}

.nav__links a {
    display: block;
    padding: 8px 14px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-mid);
    border-radius: var(--r-pill);
    transition: color 0.22s var(--ease-soft), background 0.22s var(--ease-soft);
}

.nav__links a:hover {
    color: var(--text-hi);
    background: var(--glass-2);
}

.nav__actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.icon-btn {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: var(--r-pill);
    border: 1px solid var(--glass-border);
    background: var(--glass-1);
    color: var(--text-mid);
    transition: all 0.22s var(--ease-soft);
}

.icon-btn:hover {
    color: var(--text-hi);
    background: var(--glass-3);
    border-color: var(--glass-border-strong);
    transform: translateY(-1px);
}

.icon-btn svg {
    width: 17px;
    height: 17px;
}

.nav__toggle {
    display: none;
}

/* ---------- 徽章 / 状态点 ---------- */
.pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 15px;
    border-radius: var(--r-pill);
    border: 1px solid var(--glass-border);
    background: var(--glass-2);
    font-size: 0.79rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text-mid);
    white-space: nowrap;
}

.pill--pause {
    border-color: rgba(245, 165, 36, 0.34);
    background: rgba(245, 165, 36, 0.1);
    color: #ffd08a;
}

html[data-theme="light"] .pill--pause {
    color: #a4600a;
}

.pill--live {
    border-color: rgba(52, 211, 153, 0.34);
    background: rgba(52, 211, 153, 0.1);
    color: #86efac;
}

html[data-theme="light"] .pill--live {
    color: #047857;
}

.dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
    flex-shrink: 0;
}

.dot--pulse {
    box-shadow: 0 0 0 0 currentColor;
    animation: pulse-ring 2.2s var(--ease-soft) infinite;
}

@keyframes pulse-ring {
    0% { box-shadow: 0 0 0 0 rgba(245, 165, 36, 0.55); }
    70% { box-shadow: 0 0 0 9px rgba(245, 165, 36, 0); }
    100% { box-shadow: 0 0 0 0 rgba(245, 165, 36, 0); }
}

/* ---------- 首屏 Hero ---------- */
.hero {
    position: relative;
    padding: calc(var(--nav-h) + 72px) 0 64px;
    overflow: hidden;
}

.hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 56px;
    align-items: center;
}

.hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 26px;
}

.hero__title {
    font-size: clamp(2.1rem, 5.2vw, 3.65rem);
    font-weight: 900;
    line-height: 1.14;
    letter-spacing: -0.032em;
    margin-bottom: 22px;
}

.hero__title em {
    font-style: normal;
    background: linear-gradient(105deg, var(--c-cyan) 0%, var(--c-blue) 48%, var(--c-indigo) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.hero__lead {
    font-size: 1.03rem;
    color: var(--text-mid);
    max-width: 56ch;
    margin-bottom: 14px;
}

.hero__lead strong {
    color: var(--text-hi);
    font-weight: 700;
}

.hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 22px;
    margin: 26px 0 32px;
    font-size: 0.86rem;
    color: var(--text-low);
}

.hero__meta span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.hero__meta svg {
    width: 15px;
    height: 15px;
    color: var(--c-cyan);
    flex-shrink: 0;
}

.hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 12px 24px;
    border-radius: var(--r-pill);
    font-size: 0.9rem;
    font-weight: 650;
    letter-spacing: 0.01em;
    border: 1px solid transparent;
    transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), background 0.22s var(--ease-soft), border-color 0.22s var(--ease-soft);
    will-change: transform;
}

.btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.btn--primary {
    background: linear-gradient(135deg, var(--c-cyan), var(--c-blue));
    color: #04121a;
    box-shadow: 0 8px 26px -10px var(--glow-cyan);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 34px -10px var(--glow-cyan);
}

.btn--ghost {
    background: var(--glass-2);
    border-color: var(--glass-border);
    color: var(--text-hi);
}

.btn--ghost:hover {
    background: var(--glass-3);
    border-color: var(--glass-border-strong);
    transform: translateY(-2px);
}

/* ---------- 倒计时卡 ---------- */
.countdown-card {
    position: relative;
    border-radius: var(--r-xl);
    border: 1px solid var(--glass-border);
    background: linear-gradient(160deg, var(--glass-2), var(--glass-1));
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    padding: 30px 28px;
    box-shadow: 0 24px 70px -32px rgba(0, 0, 0, 0.75), inset 0 1px 0 rgba(255, 255, 255, 0.07);
    overflow: hidden;
}

.countdown-card::before {
    content: '';
    position: absolute;
    top: -55%;
    right: -35%;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, var(--glow-amber), transparent 68%);
    pointer-events: none;
}

.countdown-card__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 22px;
    position: relative;
}

.countdown-card__label {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    color: var(--text-low);
}

.countdown {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    position: relative;
}

.countdown__cell {
    text-align: center;
    padding: 14px 6px 12px;
    border-radius: var(--r-md);
    background: rgba(0, 0, 0, 0.22);
    border: 1px solid var(--glass-border);
}

html[data-theme="light"] .countdown__cell {
    background: rgba(255, 255, 255, 0.7);
}

.countdown__num {
    font-family: var(--font-mono);
    font-size: clamp(1.5rem, 3.4vw, 2rem);
    font-weight: 700;
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
    color: var(--text-hi);
    display: block;
}

.countdown__unit {
    font-size: 0.7rem;
    color: var(--text-low);
    letter-spacing: 0.08em;
    margin-top: 4px;
    display: block;
}

.countdown-card__foot {
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid var(--glass-border);
    font-size: 0.82rem;
    color: var(--text-mid);
    display: flex;
    align-items: flex-start;
    gap: 9px;
    position: relative;
}

.countdown-card__foot svg {
    width: 15px;
    height: 15px;
    color: var(--c-pause);
    flex-shrink: 0;
    margin-top: 4px;
}

/* ---------- 区块标题 ---------- */
.sec-head {
    max-width: 640px;
    margin-bottom: 44px;
}

.sec-head--center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.sec-head__kicker {
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--c-cyan);
    margin-bottom: 12px;
    display: block;
}

.sec-head__title {
    font-size: clamp(1.55rem, 3.2vw, 2.15rem);
    font-weight: 850;
    letter-spacing: -0.026em;
    line-height: 1.24;
    margin-bottom: 12px;
}

.sec-head__desc {
    color: var(--text-mid);
    font-size: 0.95rem;
}

/* ---------- 玻璃面板 ---------- */
.panel {
    border-radius: var(--r-lg);
    border: 1px solid var(--glass-border);
    background: var(--glass-1);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    padding: 28px;
}

/* ---------- 公告正文 ---------- */
.notice {
    border-radius: var(--r-xl);
    border: 1px solid rgba(245, 165, 36, 0.24);
    background:
        linear-gradient(160deg, rgba(245, 165, 36, 0.09), rgba(245, 165, 36, 0.02)),
        var(--glass-1);
    padding: 34px;
    position: relative;
    overflow: hidden;
}

.notice::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--c-amber), transparent);
}

.notice__head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.notice__date {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-low);
    letter-spacing: 0.04em;
}

.notice__body {
    color: var(--text-mid);
    font-size: 0.96rem;
}

.notice__body p + p {
    margin-top: 15px;
}

.notice__body strong {
    color: var(--text-hi);
    font-weight: 700;
}

.notice__body .hl {
    color: #ffd08a;
    font-weight: 700;
}

html[data-theme="light"] .notice__body .hl {
    color: #a4600a;
}

.notice__sign {
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid rgba(245, 165, 36, 0.18);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-low);
}

.notice__sign strong {
    color: var(--text-hi);
    font-weight: 700;
}

/* ---------- 承诺清单 ---------- */
.assure {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(228px, 1fr));
    gap: 16px;
    margin-top: 26px;
}

.assure__item {
    display: flex;
    gap: 13px;
    padding: 18px;
    border-radius: var(--r-md);
    border: 1px solid var(--glass-border);
    background: var(--glass-1);
    transition: border-color 0.24s var(--ease-soft), transform 0.24s var(--ease), background 0.24s var(--ease-soft);
}

.assure__item:hover {
    border-color: rgba(52, 211, 153, 0.3);
    background: var(--glass-2);
    transform: translateY(-2px);
}

.assure__icon {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: rgba(52, 211, 153, 0.12);
    color: var(--c-green);
}

.assure__icon svg {
    width: 17px;
    height: 17px;
}

.assure__text h4 {
    font-size: 0.92rem;
    font-weight: 700;
    margin-bottom: 4px;
    letter-spacing: -0.01em;
}

.assure__text p {
    font-size: 0.83rem;
    color: var(--text-low);
    line-height: 1.6;
}

/* ---------- 时间轴 ---------- */
.timeline {
    position: relative;
    padding-left: 30px;
    margin-top: 8px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: linear-gradient(180deg, var(--c-cyan), var(--glass-border) 55%, transparent);
}

.tl-item {
    position: relative;
    padding-bottom: 30px;
}

.tl-item:last-child {
    padding-bottom: 0;
}

.tl-item::before {
    content: '';
    position: absolute;
    left: -30px;
    top: 7px;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--bg-base);
    border: 2px solid var(--glass-border-strong);
    transition: border-color 0.24s var(--ease-soft), box-shadow 0.24s var(--ease-soft);
}

.tl-item.is-active::before {
    border-color: var(--c-amber);
    box-shadow: 0 0 0 4px rgba(245, 165, 36, 0.16);
}

.tl-item.is-done::before {
    border-color: var(--c-green);
    background: var(--c-green);
}

.tl-item__date {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: var(--text-low);
    letter-spacing: 0.05em;
    margin-bottom: 5px;
    display: block;
}

.tl-item__title {
    font-size: 0.98rem;
    font-weight: 700;
    margin-bottom: 5px;
    letter-spacing: -0.012em;
}

.tl-item__desc {
    font-size: 0.87rem;
    color: var(--text-mid);
    max-width: 62ch;
}

/* ---------- 服务状态表 ---------- */
.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 14px;
}

.status-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 17px 20px;
    border-radius: var(--r-md);
    border: 1px solid var(--glass-border);
    background: var(--glass-1);
    transition: background 0.22s var(--ease-soft), border-color 0.22s var(--ease-soft);
}

.status-row:hover {
    background: var(--glass-2);
    border-color: var(--glass-border-strong);
}

.status-row__name {
    font-size: 0.92rem;
    font-weight: 650;
    flex: 1;
    min-width: 0;
}

.status-row__name small {
    display: block;
    font-size: 0.76rem;
    font-weight: 400;
    color: var(--text-low);
    margin-top: 2px;
}

.status-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 11px;
    border-radius: var(--r-pill);
    font-size: 0.74rem;
    font-weight: 650;
    white-space: nowrap;
    flex-shrink: 0;
}

.status-tag--pause {
    background: rgba(245, 165, 36, 0.12);
    color: #ffc96b;
    border: 1px solid rgba(245, 165, 36, 0.26);
}

html[data-theme="light"] .status-tag--pause {
    color: #9a5a05;
}

.status-tag--ok {
    background: rgba(52, 211, 153, 0.12);
    color: #6ee7b7;
    border: 1px solid rgba(52, 211, 153, 0.26);
}

html[data-theme="light"] .status-tag--ok {
    color: #047857;
}

/* ---------- 项目卡片 ---------- */
.projects {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(292px, 1fr));
    gap: 18px;
}

.pcard {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 26px;
    border-radius: var(--r-lg);
    border: 1px solid var(--glass-border);
    background: linear-gradient(165deg, var(--glass-2), var(--glass-1));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    overflow: hidden;
    transition: transform 0.3s var(--ease), border-color 0.3s var(--ease-soft), box-shadow 0.3s var(--ease);
}

.pcard::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), rgba(34, 211, 238, 0.13), transparent 58%);
    transition: opacity 0.34s var(--ease-soft);
    pointer-events: none;
}

.pcard:hover {
    transform: translateY(-4px);
    border-color: var(--glass-border-strong);
    box-shadow: 0 22px 50px -28px rgba(0, 0, 0, 0.8);
}

.pcard:hover::after {
    opacity: 1;
}

.pcard__top {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 16px;
}

.pcard__icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    border-radius: 13px;
    background: var(--glass-3);
    border: 1px solid var(--glass-border);
    color: var(--c-cyan);
}

.pcard__icon svg {
    width: 21px;
    height: 21px;
}

.pcard__title {
    font-size: 1.03rem;
    font-weight: 750;
    letter-spacing: -0.018em;
    line-height: 1.35;
}

.pcard__host {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: var(--text-low);
    margin-top: 3px;
}

.pcard__desc {
    font-size: 0.87rem;
    color: var(--text-mid);
    flex: 1;
    margin-bottom: 18px;
}

.pcard__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 18px;
}

.tag {
    font-size: 0.72rem;
    padding: 3px 9px;
    border-radius: var(--r-pill);
    background: var(--glass-2);
    border: 1px solid var(--glass-border);
    color: var(--text-low);
    white-space: nowrap;
}

.pcard__foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-top: 15px;
    border-top: 1px solid var(--glass-border);
}

.pcard__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 650;
    color: var(--c-cyan);
    transition: gap 0.22s var(--ease-soft);
}

.pcard__link:hover {
    gap: 10px;
}

.pcard__link svg {
    width: 14px;
    height: 14px;
}

/* ---------- 下载卡 ---------- */
.dl-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 14px;
}

.dl-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    border-radius: var(--r-md);
    border: 1px solid var(--glass-border);
    background: var(--glass-1);
    transition: all 0.24s var(--ease);
}

.dl-card:hover {
    background: var(--glass-2);
    border-color: rgba(34, 211, 238, 0.3);
    transform: translateY(-2px);
}

.dl-card__icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    border-radius: 11px;
    background: rgba(34, 211, 238, 0.12);
    color: var(--c-cyan);
}

.dl-card__icon svg {
    width: 19px;
    height: 19px;
}

.dl-card__body {
    min-width: 0;
    flex: 1;
}

.dl-card__title {
    font-size: 0.9rem;
    font-weight: 650;
}

.dl-card__meta {
    font-size: 0.76rem;
    color: var(--text-low);
    margin-top: 2px;
}

/* ---------- FAQ ---------- */
.faq {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 860px;
}

.faq__item {
    border-radius: var(--r-md);
    border: 1px solid var(--glass-border);
    background: var(--glass-1);
    overflow: hidden;
    transition: border-color 0.24s var(--ease-soft), background 0.24s var(--ease-soft);
}

.faq__item[open] {
    border-color: var(--glass-border-strong);
    background: var(--glass-2);
}

.faq__q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 22px;
    cursor: pointer;
    font-size: 0.93rem;
    font-weight: 650;
    letter-spacing: -0.01em;
    list-style: none;
    transition: color 0.2s var(--ease-soft);
}

.faq__q::-webkit-details-marker {
    display: none;
}

.faq__q:hover {
    color: var(--c-cyan);
}

.faq__chev {
    width: 17px;
    height: 17px;
    flex-shrink: 0;
    color: var(--text-low);
    transition: transform 0.3s var(--ease);
}

.faq__item[open] .faq__chev {
    transform: rotate(180deg);
    color: var(--c-cyan);
}

.faq__a {
    padding: 0 22px 20px;
    font-size: 0.88rem;
    color: var(--text-mid);
    line-height: 1.75;
}

.faq__a a {
    color: var(--c-cyan);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ---------- 联系 ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(216px, 1fr));
    gap: 14px;
}

.ccard {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 9px;
    padding: 28px 20px;
    border-radius: var(--r-lg);
    border: 1px solid var(--glass-border);
    background: var(--glass-1);
    transition: all 0.26s var(--ease);
}

.ccard:hover {
    transform: translateY(-3px);
    background: var(--glass-2);
    border-color: rgba(34, 211, 238, 0.3);
}

.ccard__icon {
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    background: var(--glass-3);
    border: 1px solid var(--glass-border);
    color: var(--c-cyan);
    margin-bottom: 3px;
}

.ccard__icon img {
    width: 26px;
    height: 26px;
    object-fit: contain;
    border-radius: 6px;
}

.ccard__icon svg {
    width: 22px;
    height: 22px;
}

.ccard__title {
    font-size: 0.92rem;
    font-weight: 700;
}

.ccard__desc {
    font-size: 0.79rem;
    color: var(--text-low);
    line-height: 1.6;
}

/* ---------- 页脚 ---------- */
.footer {
    margin-top: 40px;
    border-top: 1px solid var(--glass-border);
    background: color-mix(in srgb, var(--bg-deep) 60%, transparent);
    padding: 52px 0 34px;
}

.footer__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: 11px;
    font-weight: 800;
    font-size: 1rem;
    margin-bottom: 14px;
}

.footer__brand img {
    width: 32px;
    height: 32px;
    border-radius: 9px;
    object-fit: cover;
}

.footer__about {
    font-size: 0.85rem;
    color: var(--text-low);
    line-height: 1.75;
    max-width: 34ch;
}

.footer__col h5 {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.11em;
    text-transform: uppercase;
    color: var(--text-mid);
    margin-bottom: 15px;
}

.footer__col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer__col a {
    font-size: 0.85rem;
    color: var(--text-low);
    transition: color 0.2s var(--ease-soft);
}

.footer__col a:hover {
    color: var(--c-cyan);
}

.footer__bottom {
    padding-top: 26px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.78rem;
    color: var(--text-low);
}

.footer__legal {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-width: 60ch;
    line-height: 1.65;
}

/* ---------- 滚动入场动画（渐进增强） ----------
   默认内容始终可见；仅当 JS 确认可用时才启用隐藏+入场动画，
   避免脚本失效或观察器异常导致内容不可见。 */
html.js-anim .reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    will-change: opacity, transform;
}

html.js-anim .reveal.is-in {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    html.js-anim .reveal { opacity: 1; transform: none; transition: none; }
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}

/* ---------- 回到顶部 ---------- */
.to-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: var(--r-pill);
    border: 1px solid var(--glass-border);
    background: color-mix(in srgb, var(--bg-raise) 82%, transparent);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    color: var(--text-mid);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s var(--ease);
    z-index: 90;
    box-shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.7);
}

.to-top.is-on {
    opacity: 1;
    visibility: visible;
    transform: none;
}

.to-top:hover {
    color: var(--c-cyan);
    border-color: rgba(34, 211, 238, 0.4);
}

.to-top svg {
    width: 18px;
    height: 18px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
    .hero__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 32px;
    }
}

@media (max-width: 760px) {
    :root {
        --nav-h: 62px;
    }

    .section {
        padding: 60px 0;
    }

    .wrap {
        padding: 0 18px;
    }

    .nav__links {
        position: fixed;
        top: var(--nav-h);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        padding: 12px 18px 20px;
        margin: 0;
        background: color-mix(in srgb, var(--bg-base) 96%, transparent);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--glass-border);
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.26s var(--ease-soft);
    }

    .nav__links.is-open {
        transform: none;
        opacity: 1;
        visibility: visible;
    }

    .nav__links a {
        padding: 12px 14px;
        border-radius: var(--r-sm);
    }

    .nav__toggle {
        display: grid;
    }

    .brand__sub {
        display: none;
    }

    .hero {
        padding-top: calc(var(--nav-h) + 44px);
    }

    .hero__cta .btn {
        flex: 1 1 160px;
    }

    .notice {
        padding: 24px 20px;
    }

    .countdown-card {
        padding: 24px 20px;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer__bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .to-top {
        right: 16px;
        bottom: 16px;
    }
}

@media (max-width: 420px) {
    .countdown {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero__title {
        font-size: 1.95rem;
    }
}