/* ==========================================================================
   StockVision · Pure Breeze Design System
   极简 · 浅蓝白 · 连续曲率（超椭圆 Squircle）· 全站共享
   ========================================================================== */

/* ---------- Design Tokens ---------- */
:root {
    /* 背景层：蓝白极简 */
    --sv-bg: #F0F6FB;
    --sv-bg-2: #E4EEF8;
    --sv-surface: #FFFFFF;
    --sv-surface-hover: #F8FBFF;

    /* 文字 */
    --sv-ink: #0F1C30;
    --sv-ink-2: #4A6288;
    --sv-ink-3: #8BA3BF;

    /* 分隔线 */
    --sv-line: rgba(25, 94, 195, 0.10);
    --sv-line-strong: rgba(25, 94, 195, 0.20);

    /* 品牌蓝系（来自用户色板） */
    --sv-deep-navy: #212F4A;
    --sv-prussian: #052D6A;
    --sv-antho: #183F89;
    --sv-royal: #195EC3;
    --sv-sky: #72C9EF;
    --sv-azure: #0D80CD;
    --sv-light-blue: #7BBDE8;
    --sv-peacock: #0DAFC6;
    --sv-pale: #90C6F2;
    --sv-klein: #002BA5;
    --sv-napoli: #FFE893;

    /* 辅助色（仅保留必要的，以蓝为绝对主导） */
    --sv-mint: #38B89A;
    --sv-amber: #E89B30;
    --sv-rose: #E8637A;

    /* 渐变：极简，以单蓝为主 */
    --sv-grad-primary: linear-gradient(135deg, #195EC3 0%, #0D80CD 100%);
    --sv-grad-accent: linear-gradient(135deg, #052D6A 0%, #195EC3 100%);
    --sv-grad-sky: linear-gradient(135deg, #72C9EF 0%, #90C6F2 100%);
    --sv-grad-text: linear-gradient(100deg, #195EC3 0%, #0D80CD 50%, #72C9EF 100%);
    --sv-grad-text-size: 200% auto;

    /* 阴影：极淡蓝色调 */
    --sv-shadow-card: 0 2px 16px -4px rgba(25, 94, 195, 0.08);
    --sv-shadow-card-hover: 0 8px 32px -6px rgba(25, 94, 195, 0.14);
    --sv-shadow-btn: 0 4px 16px -4px rgba(25, 94, 195, 0.35);
    --sv-shadow-gold: 0 4px 16px -4px rgba(232, 155, 48, 0.35);

    /* 字体 */
    --sv-font-display: "Sora", "Manrope", -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    --sv-font-body: "Manrope", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    --sv-font-mono: "JetBrains Mono", "Cascadia Code", Consolas, "Courier New", monospace;

    /* 动效 */
    --sv-ease: cubic-bezier(0.22, 1, 0.36, 1);
    --sv-ease-out: cubic-bezier(0.16, 1, 0.3, 1);

    --sv-nav-h: 68px;
    --sv-max: 1180px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: calc(var(--sv-nav-h) + 16px);
}

body {
    font-family: var(--sv-font-body);
    background: var(--sv-bg);
    color: var(--sv-ink);
    line-height: 1.75;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }

::selection { background: rgba(25, 94, 195, 0.18); color: var(--sv-prussian); }

/* 滚动条：浅蓝 */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: #E8EFF8; }
::-webkit-scrollbar-thumb {
    background: #B8CCE8;
    border-radius: 99px;
    border: 2px solid #E8EFF8;
}
::-webkit-scrollbar-thumb:hover { background: #90AED8; }

:focus-visible { outline: 2px solid var(--sv-azure); outline-offset: 3px; border-radius: 4px; }

/* ==========================================================================
   背景层：极简浅色光晕 + 极淡网格（由 sv.js 注入 .sv-bgfx）
   ========================================================================== */
.sv-bgfx, .sv-bgfx * { position: fixed; inset: 0; pointer-events: none; }
.sv-bgfx { z-index: 0; overflow: hidden; }
.sv-bgfx .sv-aurora {
    inset: -20%;
    background:
        radial-gradient(42% 38% at 18% 12%, rgba(114, 201, 239, 0.18) 0%, transparent 62%),
        radial-gradient(36% 34% at 84% 8%, rgba(13, 128, 205, 0.10) 0%, transparent 60%),
        radial-gradient(48% 44% at 78% 88%, rgba(144, 198, 242, 0.10) 0%, transparent 62%),
        radial-gradient(40% 42% at 12% 92%, rgba(25, 94, 195, 0.08) 0%, transparent 64%);
    filter: blur(30px) saturate(1.15);
    animation: sv-aurora 26s var(--sv-ease) infinite alternate;
}
.sv-bgfx .sv-grid {
    background-image:
        linear-gradient(rgba(25, 94, 195, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(25, 94, 195, 0.04) 1px, transparent 1px);
    background-size: 46px 46px;
    mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 78%);
    -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 78%);
}
.sv-bgfx .sv-noise {
    opacity: 0.25;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.18'/%3E%3C/svg%3E");
}
@keyframes sv-aurora {
    0%   { transform: translate3d(-2%, -1%, 0) scale(1) rotate(0deg); }
    50%  { transform: translate3d(2%, 2%, 0) scale(1.08) rotate(4deg); }
    100% { transform: translate3d(-1%, 3%, 0) scale(1.03) rotate(-3deg); }
}

/* 页面内容置于背景之上 */
.sv-nav, .sv-page, .sv-footer, .sv-backtop { position: relative; z-index: 1; }
.sv-page { min-height: 60vh; }

/* ==========================================================================
   通用容器 / 排版
   ========================================================================== */
.sv-container { width: min(var(--sv-max), 100% - 48px); margin-inline: auto; }
.sv-section { padding: 104px 0; position: relative; }

.sv-eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: var(--sv-font-mono);
    font-size: 12px; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase;
    color: var(--sv-azure);
    padding: 7px 16px;
    border: 1px solid rgba(13, 128, 205, 0.18);
    background: rgba(25, 94, 195, 0.05);
    white-space: nowrap;
}
.sv-eyebrow::before {
    content: ""; width: 6px; height: 6px; border-radius: 50%;
    background: var(--sv-azure); box-shadow: 0 0 10px rgba(13, 128, 205, 0.3);
    animation: sv-pulse 2.4s ease-in-out infinite;
}
@keyframes sv-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.sv-h2 {
    font-family: var(--sv-font-display);
    font-size: clamp(28px, 3.6vw, 42px);
    font-weight: 700; letter-spacing: -0.02em; line-height: 1.18;
    margin-top: 18px;
}
.sv-section-head { max-width: 660px; margin: 0 auto 56px; text-align: center; }
.sv-section-head .sv-eyebrow { margin-inline: auto; }
.sv-section-head p { color: var(--sv-ink-2); margin-top: 16px; font-size: 16.5px; }

.sv-gradient-text {
    background: var(--sv-grad-text);
    background-size: var(--sv-grad-text-size);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: transparent;
    animation: sv-textshine 7s linear infinite;
}
@keyframes sv-textshine { to { background-position: 200% center; } }

.muted { color: var(--sv-ink-2); }
.sv-mono { font-family: var(--sv-font-mono); }

/* ==========================================================================
   连续曲率元素（Squircle 由 sv.js 生成蒙版；下面的 border-radius 为兜底）
   ========================================================================== */
[data-sq] { border-radius: 16px; }
[data-sq="xs"] { border-radius: 9px; }
[data-sq="sm"] { border-radius: 12px; }
[data-sq="md"] { border-radius: 18px; }
[data-sq="lg"] { border-radius: 26px; }
[data-sq="xl"] { border-radius: 34px; }
[data-sq="pill"] { border-radius: 999px; }

/* ==========================================================================
   按钮：极简纯色 + 连续曲率
   ========================================================================== */
.sv-btn {
    position: relative;
    display: inline-flex; align-items: center; justify-content: center; gap: 9px;
    padding: 13.5px 28px;
    font-family: var(--sv-font-body);
    font-size: 15px; font-weight: 700; letter-spacing: 0.01em;
    color: var(--sv-surface);
    background: var(--sv-surface);
    border: 1.5px solid var(--sv-line);
    overflow: hidden;
    isolation: isolate;
    white-space: nowrap;
    user-select: none;
    transition: transform 0.45s var(--sv-ease), filter 0.45s var(--sv-ease),
                border-color 0.35s ease, background 0.35s ease, color 0.35s ease;
    will-change: transform;
}
.sv-btn::after { /* 微光扫过 */
    content: ""; position: absolute; inset: 0; z-index: 1;
    background: linear-gradient(105deg, transparent 38%, rgba(255, 255, 255, 0.45) 50%, transparent 62%);
    transform: translateX(-130%) skewX(-14deg);
    transition: transform 0.9s var(--sv-ease);
    pointer-events: none;
}
.sv-btn:hover { transform: translateY(-2px); }
.sv-btn:hover::after { transform: translateX(130%) skewX(-14deg); }
.sv-btn:active { transform: translateY(0) scale(0.97); }
.sv-btn > * { position: relative; z-index: 2; }

.sv-btn-primary {
    background: var(--sv-grad-primary);
    border-color: transparent;
    filter: drop-shadow(var(--sv-shadow-btn));
    color: #fff;
}
.sv-btn-primary:hover { filter: drop-shadow(0 8px 24px -4px rgba(25, 94, 195, 0.55)) brightness(1.04); }

.sv-btn-gold {
    background: linear-gradient(135deg, #E89B30 0%, #F0B84A 100%);
    color: #fff;
    border-color: transparent;
    filter: drop-shadow(var(--sv-shadow-gold));
}
.sv-btn-gold:hover { filter: drop-shadow(0 8px 24px -4px rgba(232, 155, 48, 0.5)) brightness(1.04); }

.sv-btn-ghost {
    background: rgba(255, 255, 255, 0.7);
    border-color: var(--sv-line-strong);
    color: var(--sv-azure);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}
.sv-btn-ghost:hover { border-color: var(--sv-azure); background: rgba(255, 255, 255, 0.95); color: var(--sv-royal); }

.sv-btn-soft {
    background: rgba(25, 94, 195, 0.08);
    border-color: rgba(25, 94, 195, 0.18);
    color: var(--sv-azure);
}
.sv-btn-soft:hover { background: rgba(25, 94, 195, 0.14); color: var(--sv-royal); }

.sv-btn-sm { padding: 9px 18px; font-size: 13.5px; }
.sv-btn-lg { padding: 16px 36px; font-size: 16.5px; }
.sv-btn-block { width: 100%; }

/* ==========================================================================
   卡片：白底极简 + 极淡蓝边
   ========================================================================== */
.sv-card {
    position: relative;
    background: var(--sv-surface);
    border: 1px solid var(--sv-line);
    padding: 30px 28px;
    overflow: hidden;
    isolation: isolate;
    transition: transform 0.55s var(--sv-ease), border-color 0.4s ease, box-shadow 0.55s var(--sv-ease);
    box-shadow: var(--sv-shadow-card);
}
.sv-card.sv-glow::before {
    content: ""; position: absolute; inset: 0; z-index: 0;
    background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(114, 201, 239, 0.10), transparent 65%);
    opacity: 0; transition: opacity 0.45s ease; pointer-events: none;
}
.sv-card.sv-glow:hover::before { opacity: 1; }
.sv-card::after { /* 极简顶部线 */
    content: ""; position: absolute; top: 0; left: 12%; right: 12%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(25, 94, 195, 0.18), transparent);
    opacity: 0.8;
}
.sv-card > * { position: relative; z-index: 1; }
.sv-card.sv-lift:hover { transform: translateY(-6px); border-color: rgba(25, 94, 195, 0.2); box-shadow: var(--sv-shadow-card-hover); }

.sv-card-flat {
    background: var(--sv-surface);
    border: 1px solid var(--sv-line);
    padding: 22px 24px;
}

/* 图标方块 */
.sv-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 52px; height: 52px; font-size: 24px;
    background: linear-gradient(150deg, rgba(25, 94, 195, 0.10), rgba(114, 201, 239, 0.08));
    border: 1px solid rgba(25, 94, 195, 0.12);
    margin-bottom: 18px;
}
.sv-card h3 {
    font-family: var(--sv-font-display);
    font-size: 19px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 8px;
}
.sv-card p { color: var(--sv-ink-2); font-size: 14.8px; }

/* 标签 / 徽章 */
.sv-chip {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 15px;
    font-family: var(--sv-font-mono);
    font-size: 12.5px; font-weight: 500; letter-spacing: 0.02em;
    color: var(--sv-ink-2);
    background: rgba(25, 94, 195, 0.05);
    border: 1px solid var(--sv-line);
    white-space: nowrap;
}
.sv-chip-blue { color: var(--sv-royal); background: rgba(25, 94, 195, 0.08); border-color: rgba(25, 94, 195, 0.18); }
.sv-chip-mint { color: #2A8B75; background: rgba(56, 184, 154, 0.08); border-color: rgba(56, 184, 154, 0.2); }
.sv-chip-amber { color: #A66A1A; background: rgba(232, 155, 48, 0.08); border-color: rgba(232, 155, 48, 0.2); }
.sv-chip-rose { color: #C04A5C; background: rgba(232, 99, 122, 0.08); border-color: rgba(232, 99, 122, 0.2); }

/* ==========================================================================
   导航栏
   ========================================================================== */
.sv-nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    height: var(--sv-nav-h);
    transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
    border-bottom: 1px solid transparent;
}
.sv-nav.scrolled {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom-color: var(--sv-line);
    box-shadow: 0 4px 24px -8px rgba(25, 94, 195, 0.08);
}
.sv-nav-inner {
    height: var(--sv-nav-h);
    width: min(var(--sv-max), 100% - 48px); margin-inline: auto;
    display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.sv-logo {
    display: inline-flex; align-items: center; gap: 11px;
    font-family: var(--sv-font-display);
    font-size: 19px; font-weight: 700; letter-spacing: -0.01em;
}
.sv-logo .sv-logo-mark {
    width: 36px; height: 36px; display: grid; place-items: center; font-size: 17px;
    background: var(--sv-grad-primary);
    filter: drop-shadow(0 4px 12px -2px rgba(25, 94, 195, 0.4));
}
.sv-logo b { font-weight: 700; }
.sv-logo small {
    display: block; font-size: 10px; font-weight: 500; letter-spacing: 0.28em;
    color: var(--sv-ink-3); font-family: var(--sv-font-mono);
}
.sv-nav-links { display: flex; align-items: center; gap: 6px; }
.sv-nav-links a {
    position: relative;
    padding: 8px 15px; font-size: 14.5px; font-weight: 600; color: var(--sv-ink-2);
    transition: color 0.3s ease;
}
.sv-nav-links a::after {
    content: ""; position: absolute; left: 15px; right: 15px; bottom: 3px; height: 2px;
    background: var(--sv-grad-primary);
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.4s var(--sv-ease);
}
.sv-nav-links a:hover, .sv-nav-links a.active { color: var(--sv-ink); }
.sv-nav-links a:hover::after, .sv-nav-links a.active::after { transform: scaleX(1); }
/* 导航中的按钮保持自身配色，不被链接规则覆盖 */
.sv-nav-links a.sv-btn { color: #fff; }
.sv-nav-links a.sv-btn:hover { color: #fff; }
.sv-nav-links a.sv-btn::after { display: none; }
.sv-nav-cta { display: flex; align-items: center; gap: 12px; }

.sv-nav-toggle {
    display: none;
    width: 44px; height: 40px; position: relative; z-index: 110;
    border: 1px solid var(--sv-line); background: rgba(255, 255, 255, 0.7);
}
.sv-nav-toggle span {
    position: absolute; left: 50%; top: 50%;
    width: 18px; height: 2px; background: var(--sv-ink);
    transform: translate(-50%, -50%);
    transition: transform 0.35s var(--sv-ease), opacity 0.25s ease;
}
.sv-nav-toggle span:nth-child(1) { transform: translate(-50%, calc(-50% - 5px)); }
.sv-nav-toggle span:nth-child(3) { transform: translate(-50%, calc(-50% + 5px)); }
body.sv-nav-open .sv-nav-toggle span:nth-child(1) { transform: translate(-50%, -50%) rotate(45deg); }
body.sv-nav-open .sv-nav-toggle span:nth-child(2) { opacity: 0; }
body.sv-nav-open .sv-nav-toggle span:nth-child(3) { transform: translate(-50%, -50%) rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */
.sv-hero {
    position: relative;
    padding: calc(var(--sv-nav-h) + 76px) 0 90px;
    min-height: 100vh;
    display: flex; align-items: center;
}
.sv-hero-grid {
    display: grid; grid-template-columns: 1.05fr 0.95fr;
    gap: 64px; align-items: center;
}
.sv-hero h1 {
    font-family: var(--sv-font-display);
    font-size: clamp(38px, 5.4vw, 64px);
    font-weight: 800; line-height: 1.08; letter-spacing: -0.03em;
    margin: 22px 0 20px;
}
.sv-hero .sv-lead {
    font-size: 17.5px; color: var(--sv-ink-2); max-width: 520px; margin-bottom: 34px;
}
.sv-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.sv-hero-stats {
    display: flex; gap: 40px; margin-top: 48px; padding-top: 30px;
    border-top: 1px solid var(--sv-line);
}
.sv-hero-stats .num {
    font-family: var(--sv-font-display);
    font-size: 30px; font-weight: 700; letter-spacing: -0.02em;
    background: var(--sv-grad-text); background-size: var(--sv-grad-text-size);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.sv-hero-stats .label { font-size: 13px; color: var(--sv-ink-3); margin-top: 2px; }

/* Hero 图表面板 */
.sv-hero-panel { position: relative; }
.sv-terminal {
    position: relative;
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.95), rgba(240, 246, 251, 0.96));
    border: 1px solid var(--sv-line-strong);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    padding: 0 0 18px;
    box-shadow: 0 20px 60px -20px rgba(25, 94, 195, 0.12);
    animation: sv-float 9s ease-in-out infinite;
}
@keyframes sv-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.sv-terminal-bar {
    display: flex; align-items: center; gap: 8px;
    padding: 14px 18px; border-bottom: 1px solid var(--sv-line);
}
.sv-terminal-bar i { width: 10px; height: 10px; border-radius: 50%; display: block; }
.sv-terminal-bar i:nth-child(1) { background: #FF9B8A; }
.sv-terminal-bar i:nth-child(2) { background: #F5C55A; }
.sv-terminal-bar i:nth-child(3) { background: #7DD9A0; }
.sv-terminal-bar .ttl {
    margin-left: 10px; font-family: var(--sv-font-mono); font-size: 12px; color: var(--sv-ink-3);
    letter-spacing: 0.08em;
}
.sv-terminal-body { padding: 20px 22px 6px; }
.sv-quote-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.sv-quote .sym { font-family: var(--sv-font-mono); font-size: 12.5px; color: var(--sv-ink-3); letter-spacing: 0.12em; }
.sv-quote .px { font-family: var(--sv-font-display); font-size: 32px; font-weight: 700; letter-spacing: -0.02em; }
.sv-quote .chg { font-family: var(--sv-font-mono); font-size: 13px; color: var(--sv-mint); font-weight: 600; }
.sv-quote .chg.down { color: var(--sv-rose); }

.sv-chart { width: 100%; height: auto; display: block; overflow: visible; }
.sv-chart .grid-line { stroke: rgba(25, 94, 195, 0.08); stroke-width: 1; }
.sv-chart .area {
    fill: url(#sv-area-fill); opacity: 0;
    animation: sv-fade 1.2s 1s var(--sv-ease) forwards;
}
.sv-chart .line {
    fill: none; stroke: url(#sv-line-stroke); stroke-width: 2.6;
    stroke-linecap: round; stroke-linejoin: round;
    stroke-dasharray: 1400; stroke-dashoffset: 1400;
    filter: drop-shadow(0 0 8px rgba(114, 201, 239, 0.45));
    animation: sv-draw 2.6s 0.3s var(--sv-ease) forwards;
}
.sv-chart .line-future {
    fill: none; stroke: var(--sv-amber); stroke-width: 2.2; stroke-dasharray: 6 6;
    stroke-linecap: round; opacity: 0;
    animation: sv-fade 0.8s 2.2s ease forwards;
}
.sv-chart .ci-band { fill: rgba(232, 155, 48, 0.10); opacity: 0; animation: sv-fade 0.8s 2.3s ease forwards; }
.sv-chart .now-line { stroke: rgba(25, 94, 195, 0.15); stroke-width: 1; stroke-dasharray: 3 4; }
.sv-chart .pulse-dot { opacity: 0; animation: sv-fade 0.6s 2.9s ease forwards; }
.sv-chart .pulse-dot circle.halo { animation: sv-ping 2s ease-out 2.9s infinite; transform-origin: center; }
@keyframes sv-draw { to { stroke-dashoffset: 0; } }
@keyframes sv-fade { to { opacity: 1; } }
@keyframes sv-ping {
    0% { r: 5; opacity: 0.8; }
    80%, 100% { r: 18; opacity: 0; }
}
.sv-terminal-meta {
    display: flex; gap: 18px; flex-wrap: wrap;
    padding: 12px 22px 0; margin-top: 8px; border-top: 1px solid var(--sv-line);
    font-family: var(--sv-font-mono); font-size: 11.8px; color: var(--sv-ink-3);
}
.sv-terminal-meta b { color: var(--sv-ink-2); font-weight: 600; }

/* 浮动小卡 */
.sv-float-chip {
    position: absolute; z-index: 3;
    display: flex; align-items: center; gap: 10px;
    padding: 11px 16px;
    background: rgba(255, 255, 255, 0.92); border: 1px solid var(--sv-line-strong);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    font-size: 13px; font-weight: 600;
    box-shadow: 0 10px 30px -10px rgba(25, 94, 195, 0.10);
    animation: sv-float 7s ease-in-out infinite;
}
.sv-float-chip .ic { font-size: 17px; }
.sv-float-chip small { display: block; font-size: 11px; color: var(--sv-ink-3); font-weight: 500; }
.sv-float-chip.fc-1 { top: -22px; left: -30px; }
.sv-float-chip.fc-2 { bottom: -18px; right: -22px; animation-delay: -3.4s; }

/* 跑马灯 */
.sv-ticker {
    position: relative;
    border-block: 1px solid var(--sv-line);
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    overflow: hidden;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.sv-ticker-track {
    display: flex; width: max-content;
    animation: sv-marquee 52s linear infinite;
}
.sv-ticker:hover .sv-ticker-track { animation-play-state: paused; }
.sv-ticker-group { display: flex; }
.sv-tick {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 26px; font-family: var(--sv-font-mono); font-size: 13.5px;
    border-right: 1px solid var(--sv-line); white-space: nowrap;
}
.sv-tick .code { color: var(--sv-ink-2); font-weight: 600; letter-spacing: 0.05em; }
.sv-tick .px { color: var(--sv-ink); }
.sv-tick .up { color: var(--sv-mint); }
.sv-tick .down { color: var(--sv-rose); }
@keyframes sv-marquee { to { transform: translateX(-50%); } }

/* ==========================================================================
   品牌标语
   ========================================================================== */
.sv-mantra { padding: 86px 0 30px; text-align: center; }
.sv-mantra .line {
    font-family: var(--sv-font-display);
    font-size: clamp(26px, 4vw, 44px); font-weight: 300;
    letter-spacing: 0.22em; line-height: 1.5;
}
.sv-mantra .studio {
    margin-top: 20px;
    font-family: var(--sv-font-mono);
    font-size: 14px; letter-spacing: 0.42em; color: var(--sv-azure);
    opacity: 0.75;
}

/* ==========================================================================
   价格卡片
   ========================================================================== */
.sv-pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(278px, 1fr));
    gap: 24px;
}
.sv-price-card {
    display: flex; flex-direction: column; text-align: center;
    padding: 34px 26px 28px;
}
.sv-price-card .plan-eyebrow {
    align-self: center; margin-bottom: 18px;
    font-family: var(--sv-font-mono); font-size: 11px; font-weight: 700;
    letter-spacing: 0.14em; text-transform: uppercase;
    padding: 6px 14px;
    color: var(--sv-ink-3); border: 1px solid var(--sv-line); background: rgba(25,94,195,.04);
}
.sv-price-card .plan-name { font-family: var(--sv-font-display); font-size: 21px; font-weight: 700; }
.sv-price-card .plan-desc { color: var(--sv-ink-3); font-size: 13.5px; margin: 4px 0 18px; min-height: 22px; }
.sv-price-card .price {
    font-family: var(--sv-font-display);
    font-size: 42px; font-weight: 800; letter-spacing: -0.03em; line-height: 1;
    color: var(--sv-royal); margin-bottom: 20px;
}
.sv-price-card .price small { font-size: 14px; font-weight: 500; color: var(--sv-ink-3); font-family: var(--sv-font-body); }
.sv-price-card ul { text-align: left; display: grid; gap: 2px; margin-bottom: 26px; }
.sv-price-card li {
    display: flex; gap: 10px; align-items: flex-start;
    padding: 9px 0; font-size: 13.8px; color: var(--sv-ink-2);
    border-bottom: 1px dashed rgba(25, 94, 195, 0.08);
}
.sv-price-card li::before {
    content: "✓"; flex: none;
    width: 19px; height: 19px; margin-top: 1px;
    display: grid; place-items: center;
    font-size: 11px; font-weight: 800;
    color: var(--sv-mint);
    background: rgba(56, 184, 154, 0.10);
    border-radius: 50%;
}
.sv-price-card li.no-update::before { content: "!"; color: var(--sv-amber); background: rgba(232,155,48,.10); }
.sv-price-card .sv-btn { margin-top: auto; }

.sv-price-card.featured {
    border-color: rgba(232, 155, 48, 0.35);
    background:
        radial-gradient(60% 40% at 50% 0%, rgba(232, 155, 48, 0.08), transparent 70%),
        var(--sv-surface);
    transform: translateY(-6px);
    box-shadow: 0 8px 32px -6px rgba(232, 155, 48, 0.12);
}
.sv-price-card.featured .plan-eyebrow {
    color: #fff; background: linear-gradient(135deg, #E89B30, #F0B84A); border-color: transparent;
}
.sv-price-card.featured .price { color: var(--sv-amber); }
.sv-price-card.featured::before {
    content: ""; position: absolute; inset: 0; padding: 1px; border-radius: inherit;
    background: linear-gradient(160deg, rgba(240,184,74,.7), transparent 40%, transparent 70%, rgba(232,155,48,.4));
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    pointer-events: none; opacity: 0.8;
}

/* ==========================================================================
   文档 / 法律页（prose）
   ========================================================================== */
.sv-page-head {
    padding: calc(var(--sv-nav-h) + 64px) 0 40px;
    text-align: center;
}
.sv-page-head h1 {
    font-family: var(--sv-font-display);
    font-size: clamp(30px, 4.4vw, 48px); font-weight: 800; letter-spacing: -0.025em;
    margin: 18px 0 12px;
}
.sv-page-head .sub { color: var(--sv-ink-2); max-width: 640px; margin: 0 auto; }
.sv-page-head .meta {
    display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 22px;
}

.sv-doc { max-width: 900px; margin: 0 auto; padding-bottom: 40px; }
.sv-chapter { padding: 34px 38px; margin-bottom: 22px; }
.sv-chapter > .chap-tag {
    display: inline-block; margin-bottom: 8px;
    font-family: var(--sv-font-mono); font-size: 11px; font-weight: 700;
    letter-spacing: 0.18em; text-transform: uppercase; color: var(--sv-azure);
    padding: 5px 13px; border: 1px solid rgba(13,128,205,.18); background: rgba(13,128,205,.05);
}
.sv-chapter h2 {
    font-family: var(--sv-font-display);
    font-size: 24px; font-weight: 700; letter-spacing: -0.015em; margin-bottom: 16px;
}
.sv-chapter h3 {
    font-family: var(--sv-font-display);
    font-size: 17px; font-weight: 600; margin: 26px 0 10px; color: var(--sv-deep-navy);
    display: flex; align-items: center; gap: 9px;
}
.sv-chapter h3::before {
    content: ""; width: 4px; height: 16px;
    background: var(--sv-grad-primary);
    border-radius: 2px; flex: none;
}
.sv-chapter p { color: var(--sv-ink-2); margin-bottom: 13px; }
.sv-chapter strong { color: var(--sv-ink); font-weight: 700; }
.sv-chapter a { color: var(--sv-azure); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(13,128,205,.35); transition: text-decoration-color .3s; }
.sv-chapter a:hover { text-decoration-color: var(--sv-azure); }
.sv-doc ul, .sv-doc ol { margin: 10px 0 14px; padding-left: 22px; color: var(--sv-ink-2); }
.sv-doc ul { list-style: none; }
.sv-doc ul > li { position: relative; padding-left: 18px; margin-bottom: 8px; }
.sv-doc ul > li::before {
    content: ""; position: absolute; left: 2px; top: 11px;
    width: 7px; height: 7px;
    background: linear-gradient(135deg, var(--sv-royal), var(--sv-sky));
    border-radius: 2px; transform: rotate(45deg);
}
.sv-doc ol { list-style: decimal; }
.sv-doc ol > li { margin-bottom: 8px; padding-left: 6px; }
.sv-doc ul ul, .sv-doc ol ul { margin: 8px 0; }
.sv-doc ul ul > li::before { background: var(--sv-ink-3); }
.sv-doc code {
    font-family: var(--sv-font-mono); font-size: 0.86em;
    color: var(--sv-azure); background: rgba(25, 94, 195, 0.07);
    border: 1px solid rgba(25, 94, 195, 0.12);
    padding: 2px 8px; border-radius: 6px;
    word-break: break-word;
}
.sv-notice {
    position: relative;
    padding: 16px 20px; margin: 18px 0;
    background: rgba(25, 94, 195, 0.05);
    border: 1px solid rgba(25, 94, 195, 0.15);
    color: var(--sv-ink-2); font-size: 14.5px;
    overflow: hidden;
}
.sv-notice.warn { background: rgba(232, 155, 48, 0.05); border-color: rgba(232, 155, 48, 0.2); color: #8A6A2A; }
.sv-notice.danger { background: rgba(232, 99, 122, 0.05); border-color: rgba(232, 99, 122, 0.18); color: #8A3D4A; }
.sv-notice.ok { background: rgba(56, 184, 154, 0.05); border-color: rgba(56, 184, 154, 0.18); color: #2A6B58; }
.sv-notice strong { color: inherit; }
.sv-doc table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 16px 0; }
.sv-table-wrap { overflow-x: auto; margin: 18px 0; border: 1px solid var(--sv-line); }
.sv-doc th {
    text-align: left; padding: 13px 18px;
    font-family: var(--sv-font-display); font-size: 13px; font-weight: 600;
    color: var(--sv-ink); background: rgba(25, 94, 195, 0.06);
    border-bottom: 1px solid var(--sv-line-strong);
    white-space: nowrap;
}
.sv-doc td { padding: 12px 18px; color: var(--sv-ink-2); border-bottom: 1px solid rgba(25,94,195,.06); }
.sv-doc tr:last-child td { border-bottom: none; }
.sv-doc tbody tr { transition: background 0.25s; }
.sv-doc tbody tr:hover { background: rgba(25, 94, 195, 0.04); }
.sv-doc pre {
    position: relative;
    background: #F4F8FD; border: 1px solid var(--sv-line);
    padding: 20px 22px; margin: 16px 0;
    overflow-x: auto;
    font-family: var(--sv-font-mono); font-size: 13px; line-height: 1.75; color: var(--sv-deep-navy);
}
.sv-doc pre code { background: none; border: none; padding: 0; color: inherit; font-size: inherit; }

.sv-quicknav { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }

/* 文档侧边栏布局（docx） */
.sv-layout { display: flex; align-items: flex-start; }
.sv-sidebar {
    position: sticky; top: calc(var(--sv-nav-h) + 16px);
    width: 264px; flex: none;
    max-height: calc(100vh - var(--sv-nav-h) - 32px); overflow-y: auto;
    padding: 22px 16px; margin-right: 28px;
}
.sv-sidebar .sb-brand {
    display: flex; align-items: center; gap: 10px;
    font-family: var(--sv-font-display); font-weight: 700; font-size: 16px;
    padding: 4px 8px 16px; margin-bottom: 10px;
    border-bottom: 1px solid var(--sv-line);
}
.sv-sidebar .sb-brand .sv-logo-mark { width: 32px; height: 32px; font-size: 15px; }
.sv-sidebar a {
    display: block; padding: 8px 12px;
    font-size: 13.5px; font-weight: 600; color: var(--sv-ink-2);
    border-left: 2px solid transparent;
    transition: all 0.3s ease;
}
.sv-sidebar a:hover, .sv-sidebar a.active {
    color: var(--sv-ink); background: rgba(25, 94, 195, 0.06);
    border-left-color: var(--sv-azure);
}
.sv-sidebar .sb-section {
    padding: 16px 12px 5px;
    font-family: var(--sv-font-mono); font-size: 10.5px; font-weight: 700;
    letter-spacing: 0.2em; text-transform: uppercase; color: var(--sv-ink-3);
}
.sv-doc-main { flex: 1; min-width: 0; padding-bottom: 60px; }
.sv-doc-main h1 {
    font-family: var(--sv-font-display);
    font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; letter-spacing: -0.025em; margin-bottom: 8px;
}
.sv-doc-main .subtitle {
    color: var(--sv-ink-2); font-size: 16px; margin-bottom: 36px;
    padding-left: 16px; border-left: 3px solid; border-image: var(--sv-grad-primary) 1;
}
.sv-doc-main h2 {
    font-family: var(--sv-font-display);
    font-size: 26px; font-weight: 700; margin: 48px 0 18px;
    display: flex; align-items: center; gap: 10px;
}
.sv-doc-main h2::after {
    content: ""; flex: 1; height: 1px;
    background: linear-gradient(90deg, var(--sv-line), transparent);
}
.sv-doc-main h3 { font-family: var(--sv-font-display); font-size: 18px; font-weight: 600; margin: 26px 0 10px; }
.sv-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.sv-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.sv-mini-card {
    padding: 20px 22px;
    background: var(--sv-surface); border: 1px solid var(--sv-line);
    transition: border-color .3s, transform .4s var(--sv-ease), box-shadow .4s var(--sv-ease);
    box-shadow: var(--sv-shadow-card);
}
.sv-mini-card:hover { border-color: rgba(25,94,195,.18); transform: translateY(-3px); box-shadow: var(--sv-shadow-card-hover); }
.sv-mini-card h4 { font-family: var(--sv-font-display); font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.sv-mini-card p { color: var(--sv-ink-2); font-size: 13.5px; margin: 0; }
.sv-flow-step { display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px dashed rgba(25,94,195,.08); }
.sv-flow-step:last-child { border-bottom: none; }
.sv-flow-num {
    flex: none; width: 28px; height: 28px; display: grid; place-items: center;
    font-family: var(--sv-font-mono); font-size: 13px; font-weight: 700; color: #fff;
    background: var(--sv-grad-primary);
}
/* docx 主栏同时承载 prose 排版时解除 .sv-doc 的居中限宽 */
.sv-doc-main.sv-doc { max-width: none; margin: 0; }
.sv-doc-main .sv-mini-card ul { margin: 8px 0 0; }
.sv-doc pre .lang-tag {
    position: absolute; top: 10px; right: 14px;
    font-family: var(--sv-font-mono); font-size: 10px; font-weight: 700;
    letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--sv-ink-3); background: rgba(25,94,195,.06);
    border: 1px solid var(--sv-line);
    padding: 3px 10px; border-radius: 99px; pointer-events: none;
}
.sv-chip-gold { color: #B07A20; background: rgba(232,155,48,.08); border-color: rgba(232,155,48,.2); }

/* ==========================================================================
   CTA
   ========================================================================== */
.sv-cta-box {
    position: relative; text-align: center;
    padding: 72px 40px;
    background:
        radial-gradient(60% 120% at 50% 0%, rgba(25, 94, 195, 0.08), transparent 70%),
        var(--sv-surface);
    border: 1px solid var(--sv-line-strong);
    overflow: hidden;
    box-shadow: var(--sv-shadow-card);
}
.sv-cta-box h2 {
    font-family: var(--sv-font-display);
    font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 14px;
}
.sv-cta-box p { color: var(--sv-ink-2); max-width: 520px; margin: 0 auto 30px; }
.sv-cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ==========================================================================
   页脚
   ========================================================================== */
.sv-footer {
    margin-top: 40px;
    border-top: 1px solid var(--sv-line);
    background: linear-gradient(180deg, transparent, rgba(228, 238, 248, 0.7));
    padding: 56px 0 30px;
}
.sv-footer-grid {
    display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap;
    padding-bottom: 34px; border-bottom: 1px solid var(--sv-line);
}
.sv-footer-brand { max-width: 330px; }
.sv-footer-brand p { color: var(--sv-ink-3); font-size: 13.5px; margin-top: 14px; }
.sv-footer-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.sv-footer-col h5 {
    font-family: var(--sv-font-mono); font-size: 11.5px; font-weight: 700;
    letter-spacing: 0.2em; text-transform: uppercase; color: var(--sv-ink-3); margin-bottom: 16px;
}
.sv-footer-col a {
    display: block; color: var(--sv-ink-2); font-size: 14px; padding: 5px 0;
    transition: color .3s, transform .3s var(--sv-ease);
}
.sv-footer-col a:hover { color: var(--sv-azure); transform: translateX(3px); }
.sv-footer-bottom {
    display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap;
    padding-top: 24px;
    font-size: 13px; color: var(--sv-ink-3);
}
.sv-footer-bottom .mantra {
    font-family: var(--sv-font-display);
    letter-spacing: 0.18em; color: var(--sv-ink-2); font-weight: 500;
}

/* 返回顶部 */
.sv-backtop {
    position: fixed; right: 28px; bottom: 28px; z-index: 90;
    width: 48px; height: 48px; display: grid; place-items: center;
    font-size: 19px;
    background: rgba(255, 255, 255, 0.9); border: 1px solid var(--sv-line-strong);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    opacity: 0; transform: translateY(16px) scale(0.9); pointer-events: none;
    transition: all 0.45s var(--sv-ease);
    color: var(--sv-azure);
}
.sv-backtop.show { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.sv-backtop:hover { border-color: var(--sv-azure); color: var(--sv-royal); transform: translateY(-3px); }

/* ==========================================================================
   模态提示框
   ========================================================================== */
.sv-modal-overlay {
    position: fixed; inset: 0; z-index: 200;
    display: grid; place-items: center; padding: 20px;
    background: rgba(15, 28, 48, 0.35);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    opacity: 0; pointer-events: none;
    transition: opacity 0.35s ease;
}
.sv-modal-overlay.open { opacity: 1; pointer-events: auto; }
.sv-modal {
    width: min(440px, 100%);
    background: linear-gradient(165deg, rgba(255, 255, 255, 0.98), rgba(248, 251, 255, 0.98));
    border: 1px solid var(--sv-line-strong);
    padding: 34px 30px 28px;
    text-align: center;
    box-shadow: 0 30px 80px -20px rgba(25, 94, 195, 0.18);
    transform: translateY(22px) scale(0.96);
    transition: transform 0.45s var(--sv-ease);
}
.sv-modal-overlay.open .sv-modal { transform: none; }
.sv-modal .modal-ic {
    width: 60px; height: 60px; margin: 0 auto 18px;
    display: grid; place-items: center; font-size: 28px;
    background: var(--sv-grad-primary);
    filter: drop-shadow(0 10px 24px -6px rgba(25,94,195,.35));
}
.sv-modal h3 { font-family: var(--sv-font-display); font-size: 21px; font-weight: 700; margin-bottom: 10px; }
.sv-modal p { color: var(--sv-ink-2); font-size: 14.5px; margin-bottom: 22px; }
.sv-modal .wechat {
    font-family: var(--sv-font-mono); font-size: 22px; font-weight: 700;
    letter-spacing: 0.14em; color: var(--sv-azure);
    padding: 12px 18px; margin: 4px 0 22px;
    background: rgba(25, 94, 195, 0.06); border: 1px dashed rgba(25, 94, 195, 0.2);
    user-select: all;
}
.sv-modal .modal-close { position: absolute; top: 14px; right: 16px; font-size: 20px; color: var(--sv-ink-3); transition: color .3s; }
.sv-modal .modal-close:hover { color: var(--sv-ink); }
.sv-modal { position: relative; }

/* ==========================================================================
   入场动画（IntersectionObserver 触发 .in）
   ========================================================================== */
.sv-reveal {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.9s var(--sv-ease-out), transform 0.9s var(--sv-ease-out);
    transition-delay: var(--sv-d, 0s);
    will-change: opacity, transform;
}
.sv-reveal.in { opacity: 1; transform: none; }
.sv-reveal-l { transform: translateX(-34px); }
.sv-reveal-r { transform: translateX(34px); }
.sv-reveal-l.in, .sv-reveal-r.in { transform: none; }
.sv-reveal-scale.in { transform: scale(0.96); }

/* 404 */
.sv-error {
    min-height: 100vh; display: grid; place-items: center; text-align: center;
    padding: 100px 24px 60px;
}
.sv-error .code {
    font-family: var(--sv-font-display);
    font-size: clamp(96px, 20vw, 220px); font-weight: 800; line-height: 1;
    letter-spacing: -0.04em;
    background: var(--sv-grad-text); background-size: var(--sv-grad-text-size);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
    animation: sv-textshine 6s linear infinite;
}

/* 简单工具类 */
.sv-text-center { text-align: center; }
.sv-mt-s { margin-top: 14px; } .sv-mt-m { margin-top: 28px; } .sv-mt-l { margin-top: 48px; }
.sv-flex-center { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1080px) {
    .sv-hero-grid { grid-template-columns: 1fr; gap: 72px; }
    .sv-hero .sv-lead { max-width: 620px; }
    .sv-hero-panel { max-width: 560px; margin-inline: auto; width: 100%; }
    .sv-float-chip.fc-1 { left: -8px; }
    .sv-float-chip.fc-2 { right: -8px; }
}

@media (max-width: 900px) {
    .sv-section { padding: 76px 0; }
    .sv-layout { flex-direction: column; }
    .sv-sidebar {
        position: static; width: 100%; max-height: none;
        margin: 0 0 24px; padding: 14px;
        display: flex; overflow-x: auto; gap: 4px;
    }
    .sv-sidebar .sb-brand, .sv-sidebar .sb-section { display: none; }
    .sv-sidebar a { white-space: nowrap; border-left: none; border-bottom: 2px solid transparent; padding: 6px 12px; }
    .sv-sidebar a.active { border-left: none; border-bottom-color: var(--sv-azure); }
    .sv-grid-3 { grid-template-columns: 1fr 1fr; }
    .sv-footer-grid { gap: 30px; }
}

@media (max-width: 760px) {
    .sv-container, .sv-nav-inner { width: min(100% - 32px, var(--sv-max)); }
    .sv-nav-toggle { display: block; }
    .sv-nav-cta .sv-btn { display: none; }
    .sv-nav-links {
        position: fixed; inset: var(--sv-nav-h) 0 auto 0;
        flex-direction: column; align-items: stretch; gap: 0;
        background: rgba(255, 255, 255, 0.96);
        backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
        border-bottom: 1px solid var(--sv-line);
        padding: 10px 16px 22px;
        transform: translateY(-12px); opacity: 0; pointer-events: none;
        transition: transform 0.45s var(--sv-ease), opacity 0.35s ease;
    }
    body.sv-nav-open .sv-nav-links { transform: none; opacity: 1; pointer-events: auto; }
    .sv-nav-links a { padding: 14px 10px; font-size: 16px; border-bottom: 1px solid rgba(25,94,195,.06); }
    .sv-nav-links a::after { display: none; }
    .sv-nav-links .sv-btn { display: inline-flex; margin-top: 12px; }

    .sv-hero { padding-top: calc(var(--sv-nav-h) + 48px); }
    .sv-hero-stats { gap: 26px; flex-wrap: wrap; }
    .sv-hero-stats .num { font-size: 25px; }
    .sv-float-chip { display: none; }
    .sv-mantra .line { letter-spacing: 0.12em; }
    .sv-grid-2, .sv-grid-3 { grid-template-columns: 1fr; }
    .sv-chapter { padding: 26px 20px; }
    .sv-cta-box { padding: 52px 22px; }
    .sv-footer-cols { gap: 32px; width: 100%; }
    .sv-backtop { right: 16px; bottom: 16px; width: 42px; height: 42px; }
}

@media (max-width: 480px) {
    .sv-section { padding: 60px 0; }
    .sv-hero-actions .sv-btn { width: 100%; }
    .sv-card { padding: 24px 20px; }
    .sv-terminal-body { padding: 14px 14px 4px; }
    .sv-quote .px { font-size: 26px; }
    .sv-price-card.featured { transform: none; }
    .sv-hero-stats { gap: 18px; }
    .sv-tick { padding: 12px 18px; font-size: 12.5px; }
}

/* ==========================================================================
   无障碍：降低动态
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
    .sv-reveal { opacity: 1; transform: none; }
    .sv-chart .line { stroke-dashoffset: 0; }
    .sv-chart .area, .sv-chart .line-future, .sv-chart .ci-band, .sv-chart .pulse-dot { opacity: 1; }
}