/* ============================================
   滨客莱科技官网 — v4 Apple-style Pink
   参考 apple.com — 极简/大留白/精致渐变/粉色主调
   ============================================ */

/* ========== 鸿蒙字体 ========== */
/* 优先使用系统已安装的鸿蒙字体，否则 fallback 到思源黑体/苹方/微软雅黑 */
/* 如需本地部署，请手动下载字体文件到 fonts/ 目录，并修改 url() 路径 */
@font-face {
    font-family: 'HarmonyOS Sans SC';
    src: local('HarmonyOS Sans SC'), local('HarmonyOS Sans'), url('fonts/HarmonyOS_Sans_Thin.woff2') format('woff2');
    font-weight: 300; font-display: swap;
}
@font-face {
    font-family: 'HarmonyOS Sans SC';
    src: local('HarmonyOS Sans SC'), local('HarmonyOS Sans'), url('fonts/HarmonyOS_Sans_Regular.woff2') format('woff2');
    font-weight: 400; font-display: swap;
}
@font-face {
    font-family: 'HarmonyOS Sans SC';
    src: local('HarmonyOS Sans SC'), local('HarmonyOS Sans'), url('fonts/HarmonyOS_Sans_Medium.woff2') format('woff2');
    font-weight: 500; font-display: swap;
}
@font-face {
    font-family: 'HarmonyOS Sans SC';
    src: local('HarmonyOS Sans SC'), local('HarmonyOS Sans'), url('fonts/HarmonyOS_Sans_Bold.woff2') format('woff2');
    font-weight: 700; font-display: swap;
}

:root {
    /* 粉色体系 — 不是泡泡糖粉，是高级玫瑰粉 */
    --pink: oklch(0.65 0.19 350);
    --pink-light: oklch(0.78 0.14 350);
    --pink-dark: oklch(0.50 0.18 350);
    --pink-pale: oklch(0.94 0.04 350);
    --pink-muted: oklch(0.85 0.06 350);
    --coral: oklch(0.72 0.14 20);

    /* 字体 — 鸿蒙字体优先，否则 fallback 到思源黑体/苹方/微软雅黑 */
    --font-display: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* 间距 — Apple 级大留白 */
    --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 20px;
    --s6: 24px; --s8: 32px; --s10: 40px; --s12: 48px; --s16: 64px;
    --s20: 80px; --s24: 96px; --s32: 128px; --s40: 160px;

    /* 圆角 */
    --r-sm: 8px; --r-md: 14px; --r-lg: 20px; --r-xl: 28px; --r-full: 980px;

    /* 动效 */
    --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --dur: 300ms; --dur-slow: 600ms; --dur-reveal: 900ms;

    /* 浅色主题变量（默认） */
    --bg: #fff;
    --bg-alt: oklch(0.98 0.005 350);
    --bg-pink: oklch(0.97 0.025 350);
    --surface: #fff;
    --surface-alt: oklch(0.97 0.015 350);
    --ink: oklch(0.14 0.02 350);
    --ink-2: oklch(0.36 0.02 350);
    --ink-3: oklch(0.55 0.015 350);
    --border: oklch(0.92 0.01 350);
    --header-bg: rgba(255,255,255,0.72);
    --tag-bg: oklch(0.96 0.03 350);
    --tag-ink: oklch(0.42 0.12 350);
    --tag-border: oklch(0.92 0.03 350);
    --contact-bg: oklch(0.97 0.03 350);
    --contact-surface: #fff;
    --contact-ink: oklch(0.14 0.02 350);
    --contact-ink-2: oklch(0.50 0.015 350);
    --contact-input-bg: oklch(0.97 0.015 350);
    --contact-input-border: oklch(0.90 0.02 350);
    --contact-input-ink: oklch(0.14 0.02 350);
    --contact-input-ph: oklch(0.55 0.01 350);
    --contact-divider: oklch(0.92 0.02 350);
    --footer-bg: oklch(0.11 0.01 350);
    --footer-ink: oklch(0.55 0.01 350);
    --shadow: 0 2px 12px oklch(0.25 0.02 350 / 0.06);
    --shadow-lg: 0 8px 40px oklch(0.25 0.02 350 / 0.08);
    --input-bg: oklch(0.97 0.01 350);
    --input-border: oklch(0.90 0.01 350);
    --glow-color: oklch(0.65 0.19 350 / 0.12);

    --z-header: 100; --z-toast: 400;
    --container: 1080px;
}

/* ========== 深色主题 ========== */
[data-theme="dark"] {
    --bg: oklch(0.11 0.01 350);
    --bg-alt: oklch(0.15 0.02 350);
    --bg-pink: oklch(0.18 0.04 350);
    --surface: oklch(0.17 0.015 350);
    --surface-alt: oklch(0.20 0.025 350);
    --ink: oklch(0.95 0.005 350);
    --ink-2: oklch(0.72 0.012 350);
    --ink-3: oklch(0.52 0.01 350);
    --border: oklch(0.24 0.02 350);
    --header-bg: rgba(20,16,18,0.72);
    --tag-bg: oklch(0.20 0.03 350);
    --tag-ink: oklch(0.72 0.10 350);
    --tag-border: oklch(0.24 0.02 350);
    --contact-bg: oklch(0.16 0.035 350);
    --contact-surface: oklch(0.19 0.025 350);
    --contact-ink: oklch(0.92 0.005 350);
    --contact-ink-2: oklch(0.60 0.01 350);
    --contact-input-bg: oklch(0.16 0.015 350);
    --contact-input-border: oklch(0.28 0.02 350);
    --contact-input-ink: oklch(0.92 0.005 350);
    --contact-input-ph: oklch(0.45 0.01 350);
    --contact-divider: oklch(0.26 0.02 350);
    --footer-bg: oklch(0.08 0.01 350);
    --footer-ink: oklch(0.48 0.01 350);
    --shadow: 0 2px 12px oklch(0.05 0.01 350 / 0.25);
    --shadow-lg: 0 8px 40px oklch(0.05 0.01 350 / 0.35);
    --input-bg: oklch(0.18 0.015 350);
    --input-border: oklch(0.24 0.015 350);
    --glow-color: oklch(0.55 0.15 350 / 0.08);
}

/* ========== 全局重置 ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--font-body); background: var(--bg); color: var(--ink);
    line-height: 1.5; overflow-x: hidden; cursor: default;
    transition: background var(--dur-slow) var(--ease), color var(--dur-slow) var(--ease);
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ========== Skip Link (无障碍) ========== */
.skip-link {
    position: absolute; top: -100%; left: 50%; transform: translateX(-50%);
    background: var(--pink); color: white; padding: 12px 24px;
    border-radius: 0 0 8px 8px; font-size: 0.9rem; font-weight: 600;
    z-index: 99999; text-decoration: none;
    transition: top var(--dur) var(--ease);
}
.skip-link:focus {
    top: 0; outline: 3px solid white; outline-offset: 2px;
}

/* ========== Focus 样式优化 (无障碍) ========== */
:focus-visible {
    outline: 3px solid var(--pink);
    outline-offset: 3px;
    border-radius: 2px;
}
a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
    outline: none;
}

/* ========== 光标光晕 ========== */
.cursor-glow {
    position: fixed; width: 500px; height: 500px; border-radius: 50%;
    background: radial-gradient(circle, var(--glow-color) 0%, transparent 65%);
    pointer-events: none; z-index: 1;
    transform: translate(-50%, -50%); opacity: 0;
    transition: opacity var(--dur-slow) var(--ease);
}
.cursor-glow.visible { opacity: 1; }

/* ========== 导航栏 — Apple 风格极简 ========== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-header);
    background: var(--header-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    transition: background var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
    box-shadow: 0 1px 0 oklch(0.50 0.05 350 / 0.06);
}
.site-header.scrolled {
    box-shadow: 0 1px 0 oklch(0.50 0.05 350 / 0.06), 0 4px 16px oklch(0.40 0.08 350 / 0.08);
}
[data-theme="dark"] .site-header { box-shadow: 0 1px 0 oklch(0.30 0.02 350 / 0.15); }
[data-theme="dark"] .site-header.scrolled { box-shadow: 0 1px 0 oklch(0.30 0.02 350 / 0.15), 0 4px 16px oklch(0.10 0.01 350 / 0.3); }

.nav-inner {
    max-width: var(--container); margin: 0 auto;
    padding: 0 var(--s6); display: flex; align-items: center;
    justify-content: space-between; height: 52px;
}

.logo { display: flex; align-items: center; gap: var(--s3); }
.logo-mark {
    width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
    background: var(--pink); color: white; font-weight: 700; font-size: 0.9rem;
    border-radius: var(--r-sm); letter-spacing: -0.02em;
    transition: transform var(--dur) var(--ease-spring);
}
.logo-mark:hover { transform: scale(1.08); }

.logo-text strong { font-size: 0.85rem; font-weight: 600; }
.logo-text small { font-size: 0.6rem; color: var(--ink-3); letter-spacing: 0.01em; }

.nav-links { display: flex; align-items: center; gap: var(--s6); }

.nav-link {
    font-size: 0.82rem; font-weight: 500; color: var(--ink-2);
    transition: color var(--dur) var(--ease);
}
.nav-link:hover { color: var(--ink); }

.nav-actions { display: flex; align-items: center; gap: var(--s3); position: fixed; right: var(--s6); top: 0; height: 52px; z-index: calc(var(--z-header) + 1); }

.lang-toggle {
    background: none; border: none; font-size: 0.75rem; font-weight: 600;
    color: var(--ink-2); cursor: pointer; font-family: var(--font-body);
    transition: color var(--dur) var(--ease);
    letter-spacing: 0.02em;
}
.lang-toggle:hover { color: var(--pink); }

.theme-toggle {
    background: none; border: none; width: 20px; height: 20px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--ink-2);
    transition: color var(--dur) var(--ease);
}
.theme-toggle:hover { color: var(--ink); }
[data-theme="light"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }

.btn-cta {
    background: var(--pink); color: white;
    padding: 6px 18px; border-radius: var(--r-full);
    font-size: 0.8rem; font-weight: 600;
    transition: all var(--dur) var(--ease);
}
[data-theme="dark"] .btn-cta { background: var(--pink-light); }
.btn-cta:hover { background: var(--pink-dark); transform: scale(1.03); }
.btn-cta:active { transform: scale(0.97); }

.mobile-menu-btn {
    display: none; flex-direction: column; gap: 4px;
    background: none; border: none; cursor: pointer; padding: var(--s2);
}
.mobile-menu-btn span { display: block; width: 18px; height: 1.5px; background: var(--ink); border-radius: 1px; transition: all var(--dur) var(--ease); }
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

.mobile-menu { display: none; flex-direction: column; padding: var(--s6); gap: var(--s4); background: var(--bg); border-bottom: 1px solid var(--border); }
.mobile-menu.open { display: flex; }
.mobile-link { font-size: 1rem; font-weight: 500; padding: var(--s3) 0; color: var(--ink-2); }
.mobile-cta { text-align: center; margin-top: var(--s2); }
.lang-toggle.mobile-lang { padding: var(--s3) 0; font-size: 0.9rem; text-align: left; background: none; border: none; color: var(--ink-2); cursor: pointer; font-family: var(--font-body); }

/* ========== HERO — Apple 式超大居中排版 ========== */
.hero {
    min-height: 100vh; display: flex; flex-direction: column;
    justify-content: center; align-items: center;
    position: relative; overflow: hidden;
    padding: 120px var(--s6) var(--s20);
    background: var(--bg);
    transition: background var(--dur-slow) var(--ease);
}

/* 粉色氛围层 */
.hero::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 30%, oklch(0.90 0.06 350 / 0.30) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 80% 70%, oklch(0.88 0.05 20 / 0.15) 0%, transparent 50%);
    pointer-events: none; z-index: 0;
}

[data-theme="dark"] .hero::before {
    background:
        radial-gradient(ellipse 80% 60% at 50% 30%, oklch(0.20 0.06 350 / 0.20) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 80% 70%, oklch(0.18 0.04 20 / 0.10) 0%, transparent 50%);
}

.hero-noise { position: absolute; inset: 0; opacity: 0.025; pointer-events: none; z-index: 0; }
[data-theme="dark"] .hero-noise { opacity: 0.04; }
.hero-noise::after {
    content: ''; position: absolute; inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat; background-size: 200px 200px;
}

.hero-bg-shapes { position: absolute; inset: 0; pointer-events: none; z-index: 0; }

.shape {
    position: absolute; border-radius: 50%; filter: blur(120px); opacity: 0.30;
}
[data-theme="dark"] .shape { opacity: 0.10; }

.shape-1 { width: 600px; height: 600px; background: oklch(0.72 0.16 350 / 0.18); top: -20%; right: -10%; animation: f1 24s ease-in-out infinite; }
.shape-2 { width: 450px; height: 450px; background: oklch(0.75 0.12 20 / 0.14); bottom: 0; left: -8%; animation: f2 28s ease-in-out infinite; }
.shape-3 { width: 300px; height: 300px; background: oklch(0.70 0.10 330 / 0.12); top: 45%; left: 30%; animation: f3 20s ease-in-out infinite; }
.shape-4 { width: 200px; height: 200px; background: oklch(0.80 0.06 60 / 0.10); top: 10%; right: 25%; animation: f4 22s ease-in-out infinite; }

@keyframes f1 { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(-20px,30px) scale(1.04)} }
@keyframes f2 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(30px,-20px) scale(1.05)} }
@keyframes f3 { 0%,100%{transform:translate(0,0)} 33%{transform:translate(15px,20px)} 66%{transform:translate(-10px,-15px)} }
@keyframes f4 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-12px,10px)} }

.hero-gradient-overlay { position: absolute; inset: 0; pointer-events: none; z-index: 0; }

.hero-content {
    max-width: var(--container); margin: 0 auto;
    display: grid; grid-template-columns: 1fr 1fr;
    gap: var(--s32); align-items: center;
    position: relative; z-index: 1;
    padding: 0 var(--s6);
}

.hero-text { max-width: 560px; }

.hero-title {
    font-size: clamp(2.8rem, 6vw, 4.2rem);
    font-weight: 700; line-height: 1.05;
    letter-spacing: -0.04em;
    color: var(--ink); margin-bottom: var(--s5);
}

.title-line {
    display: block; opacity: 0; transform: translateY(24px);
    animation: reveal-up var(--dur-reveal) var(--ease-out) forwards;
}
.title-line:nth-child(2) { animation-delay: 150ms; }

@keyframes reveal-up { to { opacity: 1; transform: translateY(0); } }

.hero-sub {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--ink-2); font-weight: 400;
    margin-bottom: var(--s10); line-height: 1.5;
    opacity: 0; transform: translateY(16px);
    animation: reveal-up var(--dur-reveal) var(--ease-out) 300ms forwards;
}

.hero-actions {
    display: flex; gap: var(--s4); flex-wrap: wrap;
    opacity: 0; transform: translateY(16px);
    animation: reveal-up var(--dur-reveal) var(--ease-out) 450ms forwards;
}

.btn-primary {
    display: inline-flex; align-items: center; gap: var(--s2);
    background: var(--pink); color: white;
    padding: 14px 32px; border-radius: var(--r-full);
    font-size: 1rem; font-weight: 600;
    border: none; cursor: pointer;
    transition: all var(--dur) var(--ease);
}
[data-theme="dark"] .btn-primary { background: var(--pink-light); }
.btn-primary:hover { background: var(--pink-dark); transform: scale(1.03); box-shadow: 0 4px 20px oklch(0.55 0.18 350 / 0.25); }
.btn-primary:active { transform: scale(0.97); }
.btn-primary svg { transition: transform var(--dur) var(--ease); }
.btn-primary:hover svg { transform: translateX(3px); }

.btn-ghost {
    display: inline-flex; align-items: center;
    background: none; color: var(--pink);
    padding: 14px 24px; border-radius: var(--r-full);
    font-size: 1rem; font-weight: 600;
    border: none; cursor: pointer;
    transition: all var(--dur) var(--ease);
}
.btn-ghost:hover { background: var(--bg-pink); }

/* 右侧数据卡 — 苹果风格简洁浮卡 */
.hero-visual { position: relative; height: 400px; display: flex; align-items: center; justify-content: center; }

.visual-card {
    position: absolute;
    background: var(--surface);
    border-radius: var(--r-lg);
    padding: var(--s6) var(--s8);
    min-width: 150px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: transform 400ms var(--ease), box-shadow 400ms var(--ease), border-color 300ms var(--ease);
}

.visual-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--pink);
    animation-play-state: paused;
    transform: translateY(-6px) scale(1.05) !important;
}
.visual-card:hover .vc-icon { animation: iconPop 500ms var(--ease-spring); }
.visual-card:hover .vc-value { color: var(--pink-dark); }
.visual-card:active { transform: scale(0.97); }

@keyframes iconPop {
    0% { transform: scale(1); }
    40% { transform: scale(1.3) rotate(8deg); }
    70% { transform: scale(0.95) rotate(-3deg); }
    100% { transform: scale(1) rotate(0); }
}

.vc-glow { display: none; }

.card-float-1 { top: 5%; left: 5%; animation: cf1 7s ease-in-out infinite; }
.card-float-2 { top: 8%; right: 2%; animation: cf2 8s ease-in-out infinite; }
.card-float-3 { bottom: 8%; left: 25%; animation: cf3 9s ease-in-out infinite; }

@keyframes cf1 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
@keyframes cf2 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-14px)} }
@keyframes cf3 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }

.vc-icon { font-size: 1.6rem; margin-bottom: var(--s2); }
.vc-label { font-size: 0.75rem; color: var(--ink-3); font-weight: 500; margin-bottom: 2px; }
.vc-value {
    font-size: 1.4rem; font-weight: 700; color: var(--pink);
    font-variant-numeric: tabular-nums;
}
[data-theme="dark"] .vc-value { color: var(--pink-light); }

.scroll-hint { position: absolute; bottom: var(--s10); left: 50%; transform: translateX(-50%); z-index: 1; }
.scroll-line { width: 1px; height: 48px; background: linear-gradient(to bottom, var(--pink-muted), transparent); animation: sp 2.5s ease-in-out infinite; }
@keyframes sp { 0%{opacity:1;transform:scaleY(1);transform-origin:top} 50%{opacity:0.3;transform:scaleY(0.5);transform-origin:top} 100%{opacity:1;transform:scaleY(1);transform-origin:top} }

/* ========== 波浪分隔 ========== */
.wave-divider { background: oklch(0.13 0.01 350); margin-top: -1px; transition: background var(--dur-slow) var(--ease); }
[data-theme="dark"] .wave-divider { background: oklch(0.22 0.04 350); }
.wave-divider svg { display: block; width: 100%; height: 50px; }
.wave-divider svg path { fill: var(--bg-alt); }
[data-theme="dark"] .wave-divider svg path { fill: oklch(0.18 0.03 350); }

/* ========== 区域标题 ========== */
.section-inner { max-width: var(--container); margin: 0 auto; padding: 0 var(--s6); }
.section-header { text-align: center; margin-bottom: var(--s16); }
.section-title {
    font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 700;
    letter-spacing: -0.035em; line-height: 1.08;
    color: var(--ink); margin-bottom: var(--s3);
}
.section-desc { font-size: 1.1rem; color: var(--ink-3); max-width: 480px; margin: 0 auto; }

/* ========== 核心优势 ========== */
.features {
    padding: var(--s32) 0 var(--s24);
    background: var(--bg-alt);
    transition: background var(--dur-slow) var(--ease);
}

.features-showcase {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: var(--s6);
}

.feature-item {
    text-align: center; padding: var(--s10) var(--s5);
    border-radius: var(--r-lg);
    transition: all var(--dur) var(--ease);
}
.feature-item:hover { background: var(--surface); transform: translateY(-4px); box-shadow: var(--shadow); }

.feature-glow { display: none; }

.feature-icon-wrap {
    width: 56px; height: 56px; margin: 0 auto var(--s4);
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--r-md);
    background: var(--bg-pink);
    transition: all var(--dur) var(--ease);
}
.feature-item:hover .feature-icon-wrap { background: var(--pink); }
.feature-item:hover .feature-svg { stroke: white; }
.feature-svg { width: 40px; height: 40px; transition: stroke var(--dur) var(--ease); }

.feature-name { font-size: 1.2rem; font-weight: 700; margin-bottom: var(--s2); color: var(--ink); }
.feature-desc { font-size: 0.88rem; color: var(--ink-3); line-height: 1.45; }
.feature-line {
    width: 24px; height: 3px; border-radius: 2px;
    background: var(--pink); margin: var(--s4) auto 0;
    transform: scaleX(0); transition: transform var(--dur) var(--ease-spring);
}
.feature-item:hover .feature-line { transform: scaleX(1); }

/* ========== 行业经验 ========== */
.expertise {
    padding: var(--s24) 0;
    background: var(--bg-pink);
    transition: background var(--dur-slow) var(--ease);
}

.expertise-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s6); }
.exp-item { text-align: center; padding: var(--s8) var(--s4); transition: transform var(--dur) var(--ease); }
.exp-item:hover { transform: translateY(-3px); }

.exp-number {
    display: block; font-size: clamp(2rem, 3.5vw, 2.8rem);
    font-weight: 800; color: var(--pink); margin-bottom: var(--s2);
    font-variant-numeric: tabular-nums;
}
[data-theme="dark"] .exp-number { color: var(--pink-light); }
.exp-number small { font-size: 0.45em; font-weight: 600; }
.exp-label { font-size: 1rem; font-weight: 600; margin-bottom: var(--s2); color: var(--ink); }
.exp-desc { font-size: 0.85rem; color: var(--ink-3); line-height: 1.45; margin-bottom: var(--s4); }

.exp-bar { height: 2px; background: var(--surface); border-radius: 1px; overflow: hidden; }
.exp-bar-fill {
    height: 100%; width: 0; background: var(--pink);
    border-radius: 1px; transition: width 1s var(--ease);
}
[data-theme="dark"] .exp-bar-fill { background: var(--pink-light); }
.exp-item.revealed .exp-bar-fill { width: var(--bar-w); }

/* ========== 适用行业 ========== */
.industries { padding: var(--s24) 0; background: var(--bg); transition: background var(--dur-slow) var(--ease); }
[data-theme="dark"] .industries { background: oklch(0.13 0.015 345); }

.tag-cloud { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; max-width: 720px; margin: 0 auto; }
.tag {
    padding: 8px 22px; background: var(--tag-bg); color: var(--tag-ink);
    border-radius: var(--r-full); font-weight: 600; font-size: 0.88rem;
    border: 1px solid var(--tag-border);
    transition: all var(--dur) var(--ease-spring); cursor: default;
}
.tag:hover {
    background: var(--pink); color: white; border-color: var(--pink);
    transform: translateY(-2px) scale(1.04);
}
[data-theme="dark"] .tag:hover { background: var(--pink-light); border-color: var(--pink-light); }
.tag:active { transform: scale(0.95); }

/* ========== 客户评价 ========== */
.testimonial {
    padding: var(--s32) 0;
    background: var(--bg-alt);
    position: relative; overflow: hidden;
    transition: background var(--dur-slow) var(--ease);
}

.testimonial-bg-glow {
    position: absolute; width: 400px; height: 400px;
    top: 50%; left: 50%; transform: translate(-50%, -50%);
    background: radial-gradient(circle, oklch(0.85 0.08 350 / 0.15) 0%, transparent 60%);
    pointer-events: none;
}
[data-theme="dark"] .testimonial-bg-glow {
    background: radial-gradient(circle, oklch(0.20 0.06 350 / 0.10) 0%, transparent 60%);
}

.testimonial-content { max-width: 680px; margin: 0 auto; text-align: center; position: relative; }

.quote-mark {
    font-size: 6rem; line-height: 1; color: var(--pink);
    opacity: 0.12; position: absolute; top: -1.5rem; left: -0.5rem;
}

.testimonial-quote {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    font-weight: 400; font-style: italic; line-height: 1.6;
    color: var(--ink); margin-bottom: var(--s8);
}

.testimonial-author { display: flex; flex-direction: column; align-items: center; gap: 2px; font-style: normal; }
.author-name { font-weight: 700; font-size: 1rem; color: var(--pink); }
[data-theme="dark"] .author-name { color: var(--pink-light); }
.author-title { font-size: 0.88rem; color: var(--ink-3); }

/* ========== 联系我们 ========== */
.contact {
    padding: var(--s32) 0;
    background: var(--contact-bg);
    position: relative;
    transition: background var(--dur-slow) var(--ease);
}

.contact-noise { position: absolute; inset: 0; opacity: 0.03; pointer-events: none; z-index: 0; }
[data-theme="dark"] .contact-noise { opacity: 0.05; }
.contact-noise::after {
    content: ''; position: absolute; inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat; background-size: 200px 200px;
}

.contact-layout {
    display: grid; grid-template-columns: 1fr 1.4fr;
    gap: var(--s16); align-items: start;
}

.contact-info { position: relative; z-index: 1; }

.contact-heading {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    font-weight: 700; color: var(--contact-ink);
    letter-spacing: -0.03em; line-height: 1.15;
    margin-bottom: var(--s8);
}

.contact-list { display: flex; flex-direction: column; gap: var(--s4); margin-bottom: var(--s8); }
.contact-list li { display: flex; align-items: center; gap: var(--s3); color: var(--contact-ink-2); font-size: 0.9rem; }
.contact-list svg { flex-shrink: 0; color: var(--pink); width: 18px; height: 18px; }
.contact-download { color: var(--contact-ink-2); font-size: 0.82rem; padding-top: var(--s4); border-top: 1px solid var(--contact-divider); }

.contact-form {
    background: var(--contact-surface); border-radius: var(--r-xl);
    padding: var(--s8); display: flex; flex-direction: column;
    gap: var(--s4); position: relative; z-index: 1;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4); }

.contact-form input, .contact-form textarea {
    width: 100%; padding: 12px 16px;
    border-radius: var(--r-md);
    border: 1px solid var(--contact-input-border);
    background: var(--contact-input-bg);
    color: var(--contact-input-ink);
    font-size: 0.9rem; font-family: var(--font-body);
    transition: all var(--dur) var(--ease); outline: none;
}
.contact-form input::placeholder, .contact-form textarea::placeholder { color: var(--contact-input-ph); }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--pink); box-shadow: 0 0 0 3px oklch(0.65 0.18 350 / 0.15); }
.contact-form textarea { resize: vertical; min-height: 80px; }

.btn-submit {
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--pink-light); color: white; border: none;
    padding: 14px 40px; border-radius: var(--r-full);
    font-size: 1rem; font-weight: 600; cursor: pointer;
    transition: all var(--dur) var(--ease); align-self: center;
}
.btn-submit:hover { background: var(--pink); transform: scale(1.03); box-shadow: 0 4px 16px oklch(0.55 0.18 350 / 0.25); }
.btn-submit:active { transform: scale(0.97); }
.btn-loading { display: none; animation: spin 1s linear infinite; }
.btn-submit.loading .btn-text { display: none; }
.btn-submit.loading .btn-loading { display: inline-flex; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ========== 底部 ========== */
.site-footer { background: var(--footer-bg); padding: var(--s16) 0 var(--s8); transition: background var(--dur-slow) var(--ease); }
.footer-inner { max-width: var(--container); margin: 0 auto; padding: 0 var(--s6); }
.footer-top { display: flex; justify-content: space-between; gap: var(--s16); flex-wrap: wrap; }
.footer-brand h3 { font-size: 1.1rem; color: white; margin-bottom: var(--s2); font-weight: 600; }
.footer-brand p { color: var(--footer-ink); font-size: 0.85rem; }
.footer-contact-info { margin-top: var(--s4); }
.footer-contact-info p { display: flex !important; align-items: center !important; gap: 8px !important; color: var(--footer-ink); font-size: 0.82rem; margin-top: 6px; line-height: 1.5; }
.footer-contact-info svg { flex-shrink: 0; display: block; }
.footer-contact-info span { display: inline-block; line-height: 1.5; }
.footer-links { display: flex; gap: var(--s16); flex-wrap: wrap; }
.footer-col h4 { color: var(--pink-light); font-size: 0.72rem; font-weight: 600; margin-bottom: var(--s3); letter-spacing: 0.06em; }
.footer-col a { display: block; color: var(--footer-ink); font-size: 0.82rem; padding: 2px 0; transition: color var(--dur) var(--ease); }
.footer-col a:hover { color: white; }
.footer-bottom { margin-top: var(--s10); padding-top: var(--s6); border-top: 1px solid oklch(0.20 0.01 350); text-align: center; }
.footer-bottom p { color: oklch(0.38 0.01 350); font-size: 0.75rem; }

/* ========== Toast ========== */
.toast {
    position: fixed; bottom: var(--s10); left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--pink); color: white;
    padding: 12px 28px; border-radius: var(--r-full);
    display: flex; align-items: center; gap: var(--s2);
    font-weight: 500; font-size: 0.9rem; z-index: var(--z-toast);
    box-shadow: 0 8px 24px oklch(0.55 0.18 350 / 0.25);
    opacity: 0; visibility: hidden;
    transition: transform var(--dur) var(--ease-spring), opacity 300ms var(--ease), visibility 300ms;
    pointer-events: none;
}
[data-theme="dark"] .toast { background: var(--pink-light); }
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; visibility: visible; }

/* ========== 滚动揭示 ========== */
[data-reveal] {
    opacity: 1; transform: translateY(0);
    transition: opacity var(--dur-reveal) var(--ease-out),
                transform var(--dur-reveal) var(--ease-out);
}
[data-reveal].reveal-hidden { opacity: 0; transform: translateY(24px); }

/* ========== Reduced Motion ========== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
    .shape { display: none; }
    .title-line, .hero-sub, .hero-actions { opacity: 1; transform: none; }
    [data-reveal].reveal-hidden { opacity: 1; transform: none; }
    html { scroll-behavior: auto; }
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; gap: var(--s16); text-align: center; }
    .hero-text { max-width: none; }
    .hero-actions { justify-content: center; }
    .hero-visual { height: 280px; }
    .features-showcase { grid-template-columns: repeat(2, 1fr); }
    .expertise-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-actions { display: none; }
    .mobile-menu-btn { display: flex; }
    .hero { padding: 100px var(--s6) var(--s16); min-height: auto; }
    .hero-visual { height: 240px; }
    .features-showcase { grid-template-columns: 1fr 1fr; }
    .expertise-grid { grid-template-columns: 1fr 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-top { flex-direction: column; }
    .scroll-hint { display: none; }
    .wave-divider svg { height: 24px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2.2rem; }
    .features-showcase { grid-template-columns: 1fr; }
    .expertise-grid { grid-template-columns: 1fr; }
    .visual-card { min-width: 120px; padding: var(--s4) var(--s5); }
    .cursor-glow { display: none; }
}

/* ========== 回到顶部 ========== */
.back-to-top {
    position: fixed; bottom: 32px; right: 32px; z-index: 99;
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--pink); color: #fff; border: none;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; box-shadow: 0 2px 12px oklch(0.65 0.19 350 / 0.3);
    opacity: 0; visibility: hidden;
    transform: translateY(16px);
    transition: opacity 300ms var(--ease), visibility 300ms, transform 300ms var(--ease), background 200ms;
}
.back-to-top.visible {
    opacity: 1; visibility: visible; transform: translateY(0);
}
.back-to-top:hover {
    background: var(--pink-dark);
    transform: translateY(-3px);
    box-shadow: 0 4px 20px oklch(0.65 0.19 350 / 0.4);
}
.back-to-top:active { transform: scale(0.92); }
[data-theme="dark"] .back-to-top { box-shadow: 0 2px 12px oklch(0.50 0.15 350 / 0.4); }