/* =================================================================
   TDSI Cloud · 橙金毛玻璃设计系统
   主色：琥珀金 #f5a623 → 橙 #f4751e → 深橙 #ea580c
   品牌图标（logo 背景）保持橙色（与官网 favicon 一致），标记为白色
   毛玻璃 / 极简现代风格
   ================================================================= */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Noto+Sans+SC:wght@400;500;700;900&display=swap");

:root {
    /* 主色板：琥珀金 → 橙 → 深橙 */
    --tdsi-orange-light: #f5a623;
    --tdsi-orange: #f4751e;
    --tdsi-orange-dark: #ea580c;
    --tdsi-amber: #fbbf24;

    /* 品牌橙（用于 logo 图标背景，与 favicon 一致） */
    --tdsi-brand: #f4751e;
    --tdsi-brand-light: #f5a623;
    --tdsi-brand-dark: #ea580c;

    --tdsi-ink: #1c1917;
    --tdsi-slate: #57534e;
    --tdsi-slate-light: #78716c;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { -webkit-font-smoothing: antialiased; }

html {
    scroll-padding-top: 96px;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--tdsi-ink);
    background:
        radial-gradient(circle at 15% 0%, rgba(245, 166, 35, 0.24), transparent 34rem),
        radial-gradient(circle at 85% 8%, rgba(234, 88, 12, 0.16), transparent 32rem),
        linear-gradient(180deg, #fffaf2 0%, #ffffff 42%, #fff3e3 100%);
    background-attachment: fixed;
    overflow-x: hidden;
}

/* ---- 选区 / 滚动条 ---- */
::selection { background: var(--tdsi-orange); color: #fff; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #fcd9b6; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--tdsi-orange); }

a:focus-visible,
button:focus-visible,
summary:focus-visible {
    outline: 3px solid rgba(244, 117, 30, 0.35);
    outline-offset: 3px;
}

img { max-width: 100%; height: auto; }

/* =================================================================
   背景装饰：流动色斑 + 噪点
   ================================================================= */
.tdsi-bg-fx {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}
.tdsi-blob {
    position: absolute;
    width: 24rem;
    height: 24rem;
    border-radius: 999px;
    filter: blur(100px);
    opacity: 0.6;
    mix-blend-mode: multiply;
    will-change: transform;
    animation: blob 14s infinite var(--ease-out);
}
.tdsi-blob-1 { top: -10%; left: -8%; background: rgba(244, 117, 30, 0.32); }
.tdsi-blob-2 { top: 18%; right: -10%; background: rgba(234, 88, 12, 0.26); animation-delay: -5s; }
.tdsi-blob-3 { bottom: -12%; left: 30%; background: rgba(245, 166, 35, 0.24); animation-delay: -9s; }

@keyframes blob {
    0%   { transform: translate(0px, 0px) scale(1); }
    33%  { transform: translate(40px, -60px) scale(1.12); }
    66%  { transform: translate(-30px, 30px) scale(0.92); }
    100% { transform: translate(0px, 0px) scale(1); }
}

.noise-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    opacity: 0.035;
    background-image: url('data:image/svg+xml;base64,PHN2ZyB2aWV3Qm94PSIwIDAgMjAwIDIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48ZmlsdGVyIGlkPSJuIj48ZmVUdXJidWxlbmNlIHR5cGU9ImZyYWN0YWxOb2lzZSIgYmFzZUZyZXF1ZW5jeT0iMC43IiBudW1PY3RhdmVzPSIzIiBzdGljaFRpbGVzPSJzdGl0Y2giLz48L2ZpbHRlcj48cmVjdCB3aWR0aD0iMjAwIiBoZWlnaHQ9IjIwMCIgZmlsdGVyPSJ1cmwoI24pIiBvcGFjaXR5PSIwLjciLz48L3N2Zz4=');
}

/* =================================================================
   核心组件
   ================================================================= */

/* 玻璃面板 */
.glass-panel {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 8px 32px rgba(234, 88, 12, 0.07);
}

/* 高级白卡 */
.premium-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.62));
    border: 1px solid rgba(254, 215, 170, 0.9);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.9),
        0 24px 80px rgba(234, 88, 12, 0.09);
}

/* 深色高级卡（用于暗色区块内的卡片） */
.premium-dark-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.045));
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.25);
}

/* 渐变文字 */
.text-gradient {
    background: linear-gradient(135deg, #fbbf24 0%, #f4751e 55%, #ea580c 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* 流光按钮 */
.btn-modern {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 700;
    transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), background 0.3s ease;
}
.btn-modern::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, 0.30) 45%, transparent 70%);
    transform: translateX(-120%);
    transition: transform 0.7s var(--ease-out);
    z-index: -1;
}
.btn-modern:hover::after { transform: translateX(120%); }
.btn-modern:hover { transform: translateY(-2px) scale(1.02); }

.btn-primary { background: linear-gradient(135deg, var(--tdsi-orange), var(--tdsi-orange-dark)); color: #fff; box-shadow: 0 12px 30px rgba(244, 117, 30, 0.32); }
.btn-primary:hover { box-shadow: 0 18px 44px rgba(244, 117, 30, 0.42); }

.btn-orange {
    background: linear-gradient(135deg, var(--tdsi-orange-light), var(--tdsi-orange));
    color: #fff;
    box-shadow: 0 12px 30px rgba(244, 117, 30, 0.32);
}
.btn-orange:hover { box-shadow: 0 18px 44px rgba(244, 117, 30, 0.42); }

.btn-blue {
    background: linear-gradient(135deg, var(--tdsi-amber), var(--tdsi-orange));
    color: #fff;
    box-shadow: 0 12px 30px rgba(245, 166, 35, 0.30);
}
.btn-blue:hover { box-shadow: 0 18px 44px rgba(245, 166, 35, 0.40); }

.btn-glass {
    background: rgba(255, 255, 255, 0.6);
    color: var(--tdsi-orange);
    border: 1px solid rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
}
.btn-glass:hover { background: rgba(255, 255, 255, 0.9); }

/* 数据小药丸 */
.metric-chip {
    background: rgba(255, 255, 255, 0.65);
    border: 1px solid rgba(254, 215, 170, 0.95);
    box-shadow: 0 16px 50px rgba(234, 88, 12, 0.07);
    backdrop-filter: blur(16px);
}

/* 软网格底纹 */
.soft-grid-bg {
    background-image:
        linear-gradient(rgba(234, 88, 12, 0.12) 1px, transparent 1px),
        linear-gradient(90deg, rgba(234, 88, 12, 0.12) 1px, transparent 1px);
    background-size: 32px 32px;
    -webkit-mask-image: linear-gradient(to bottom, transparent, black 16%, black 84%, transparent);
    mask-image: linear-gradient(to bottom, transparent, black 16%, black 84%, transparent);
}

/* Hero 光晕 */
.hero-shell { position: relative; }
.hero-shell::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 6rem;
    width: min(920px, 92vw);
    height: min(920px, 92vw);
    transform: translateX(-50%);
    border-radius: 999px;
    background:
        radial-gradient(circle at 50% 42%, rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0) 42%),
        conic-gradient(from 190deg, rgba(245, 166, 35, 0.24), rgba(244, 117, 30, 0.20), rgba(234, 88, 12, 0.14), rgba(245, 166, 35, 0.24));
    filter: blur(20px);
    opacity: 0.95;
    z-index: -1;
}

/* Bento 卡片 */
.bento-card { transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out); }
.bento-card:hover { transform: translateY(-6px); box-shadow: 0 30px 70px rgba(234, 88, 12, 0.13); }

/* 图标方块 */
.icon-box {
    width: 3.25rem;
    height: 3.25rem;
    background: #fff;
    border: 1px solid #fed7aa;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    box-shadow: 0 4px 14px rgba(234, 88, 12, 0.06);
    transition: transform 0.35s var(--ease-out), color 0.3s ease;
}
.group:hover .icon-box { transform: scale(1.1); }

/* 标签胶囊 */
.badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(244, 117, 30, 0.24);
    color: var(--tdsi-orange);
    font-size: 0.875rem;
    font-weight: 600;
    backdrop-filter: blur(16px);
    box-shadow: 0 8px 24px rgba(244, 117, 30, 0.12);
}

/* =================================================================
   浮动玻璃导航
   ================================================================= */
.tdsi-nav {
    position: fixed;
    top: 0.75rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 50;
    width: calc(100% - 1rem);
    max-width: 72rem;
    border-radius: 1.25rem;
    padding: 0.6rem 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(234, 88, 12, 0.07);
}
.tdsi-nav.scrolled { box-shadow: 0 16px 40px rgba(244, 117, 30, 0.12); }
.tdsi-nav a { text-decoration: none; }
.tdsi-nav .nav-link {
    color: var(--tdsi-slate);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s ease;
}
.tdsi-nav .nav-link:hover { color: var(--tdsi-orange); }
.tdsi-brand { display: flex; align-items: center; gap: 0.65rem; font-weight: 800; font-size: 1.05rem; color: var(--tdsi-ink); letter-spacing: -0.02em; }
.tdsi-brand svg { flex: none; display: block; border-radius: 0.55rem; box-shadow: 0 6px 16px rgba(244,117,30,0.35); }

/* 下拉菜单 */
.tdsi-dropdown { position: relative; }
.tdsi-dropdown-menu {
    position: absolute;
    top: calc(100% + 0.6rem);
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    width: 13rem;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.92);
    border-radius: 1rem;
    padding: 0.5rem;
    box-shadow: 0 20px 50px rgba(234, 88, 12, 0.14);
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s var(--ease-out);
}
.tdsi-dropdown:hover .tdsi-dropdown-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.tdsi-dropdown-menu a { display: block; padding: 0.55rem 0.75rem; border-radius: 0.6rem; color: var(--tdsi-slate); font-size: 0.875rem; transition: all 0.2s; }
.tdsi-dropdown-menu a:hover { background: rgba(244, 117, 30, 0.10); color: var(--tdsi-orange); }

/* 移动端菜单 */
.tdsi-mobile-menu {
    display: none;
    position: fixed;
    top: 4.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 49;
    width: calc(100% - 1rem);
    max-width: 72rem;
    border-radius: 1.25rem;
    padding: 1rem;
}
.tdsi-mobile-menu.open { display: block; }
.tdsi-mobile-menu a { display: block; padding: 0.75rem 1rem; border-radius: 0.75rem; color: var(--tdsi-slate); font-weight: 500; }
.tdsi-mobile-menu a:hover { background: rgba(244, 117, 30, 0.10); color: var(--tdsi-orange); }

/* =================================================================
   页脚
   ================================================================= */
.tdsi-footer {
    position: relative;
    background: linear-gradient(180deg, rgba(255, 250, 242, 0.65), rgba(255, 243, 227, 0.92));
    border-top: 1px solid rgba(254, 215, 170, 0.85);
    backdrop-filter: blur(20px);
}
.tdsi-footer a { color: var(--tdsi-slate-light); text-decoration: none; transition: all 0.2s ease; }
.tdsi-footer a:hover { color: var(--tdsi-orange); transform: translateX(3px); }
.tdsi-footer h4 { color: var(--tdsi-ink); font-weight: 700; font-size: 0.875rem; margin-bottom: 1rem; }

/* =================================================================
   滚动进入动画
   ================================================================= */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.active { opacity: 1; transform: translateY(0); }

@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}
.fade-in-up { opacity: 0; animation: fadeInUp 0.8s var(--ease-out) forwards; }

/* =================================================================
   通用布局工具
   ================================================================= */
.section-py { padding-top: 5rem; padding-bottom: 5rem; }
@media (min-width: 768px) { .section-py { padding-top: 7rem; padding-bottom: 7rem; } }

.container-tdsi { max-width: 72rem; margin: 0 auto; padding-left: 1rem; padding-right: 1rem; }
@media (min-width: 640px) { .container-tdsi { padding-left: 1.5rem; padding-right: 1.5rem; } }
@media (min-width: 1024px) { .container-tdsi { padding-left: 2rem; padding-right: 2rem; } }

/* 深色区块（暖橙暗区） */
.tdsi-dark {
    position: relative;
    background: radial-gradient(circle at 20% 0%, #7c2d12 0%, #1c1917 42%, #0c0a09 100%);
    color: #fff;
    overflow: hidden;
}
.tdsi-dark .tdsi-glow {
    position: absolute;
    top: -10%;
    right: -5%;
    width: 50rem;
    height: 50rem;
    background: rgba(244, 117, 30, 0.34);
    border-radius: 999px;
    filter: blur(120px);
    pointer-events: none;
}

/* =================================================================
   兼容旧类名的主题重映射（让子页内容自动适配橙金主题）
   ================================================================= */
.text-tdsi { color: var(--tdsi-orange) !important; }
.bg-tdsi { background-color: var(--tdsi-orange) !important; }
.hover-bg-tdsi:hover { background-color: var(--tdsi-orange-dark) !important; }

.card-hover {
    transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out) !important;
}
.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 70px rgba(234, 88, 12, 0.13) !important;
}

.gradient-border::before {
    background: linear-gradient(135deg, var(--tdsi-amber), var(--tdsi-orange-dark)) !important;
}

.glow-text { text-shadow: 0 0 40px rgba(244, 117, 30, 0.35); }
.stats-glow { text-shadow: 0 0 30px rgba(244, 117, 30, 0.4); }

/* 浮动导航占位：为首个内容区块补充顶部间距，避免被固定导航遮挡 */
main > section:first-child,
main > div:first-child {
    padding-top: 7rem !important;
}

/* 子页卡片统一升级为玻璃高级卡 */
.card-hover {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.62)) !important;
    border: 1px solid rgba(254, 215, 170, 0.9) !important;
    border-radius: 1rem !important;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), 0 24px 60px rgba(234, 88, 12, 0.08) !important;
}

/* =================================================================
   品牌 logo 图标：背景锁定为橙色（与 favicon 一致），标记为白色，不受主题切换影响
   ================================================================= */

/* =================================================================
   响应式 & 无障碍
   ================================================================= */
@media (max-width: 1023px) {
    .tdsi-nav .nav-desktop { display: none; }
}
@media (min-width: 1024px) {
    .tdsi-nav .nav-burger { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}