/* 人体自愈学官网 v4 · 配色 D（禾青 / 夜青 / 朝橙 / 蜜黄）
   版式节奏参照 thinkart.cn 的首页结构：全幅首屏、圆角上拉面板、整幅色块的吸顶三栏、
   三列大卡、圆角分栏卡、列表区、整幅色块页脚。颜色、图形与文案均为本项目自有。
   文字一律夜青或纸白；禾青、朝橙、蜜黄只做图形与色块。 */

@font-face { font-family: "HZY Sans"; src: url("../fonts/hzy-sans.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "HZY Sans"; src: url("../fonts/hzy-sans-md.woff2") format("woff2"); font-weight: 500 700; font-display: swap; }
@font-face { font-family: "Nunito"; src: url("../fonts/nunito.woff2") format("woff2"); font-weight: 200 900; font-display: swap; }

:root {
  --he: #67917D; --he-200: #CBDAD3; --he-300: #ADC4B9; --he-700: #3C6863; --he-800: #255355;
  --ye: #00303F; --ye-600: #0F3C4B; --ye-300: #859CA3; --ye-200: #B2C1C5;
  --cheng: #F49A71; --cheng-400: #F7B293; --cheng-700: #B36B4C;
  --huang: #DCAE1D;
  --chenwu: #D9EAE0; --chengwu: #FDE6D8; --mitang: #F6EBC4; --bai: #FBFAF6;
  --muted: #536866; --line: #DDE1D9;
  --sans: "Nunito", "HZY Sans", "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  --pad: clamp(20px, 4.4vw, 64px);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 40px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bai); color: var(--ye); font-family: var(--sans); font-size: 16.5px; line-height: 1.85; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, svg { display: block; }
img { max-width: 100%; height: auto; }
h1, h2, h3, h4, p, ol, ul, dl, dd, blockquote { margin: 0; }
ol, ul { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3 { font-weight: 500; line-height: 1.35; text-wrap: balance; }
p { text-wrap: pretty; }
.num { font-family: "Nunito", sans-serif; font-variant-numeric: tabular-nums; }
.w { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 var(--pad); }
.w.wide { max-width: 1480px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--ye); color: var(--bai); padding: 8px 16px; border-radius: 8px; }
.skip:focus { top: 12px; }
:focus-visible { outline: 2px solid var(--ye); outline-offset: 3px; border-radius: 6px; }
.note { font-size: 13.5px; line-height: 1.8; color: var(--muted); max-width: 56em; margin-top: 28px; }
.note.on-orange { color: rgba(0, 48, 63, .78); max-width: 1180px; margin-inline: auto; margin-top: 44px; }
.center-note { text-align: center; margin-inline: auto; }
[data-parallax] { transform: translate3d(0, var(--py, 0px), 0); will-change: transform; }

/* ---------- 胶囊按钮 ---------- */
.pill { display: inline-flex; align-items: center; justify-content: center; gap: 12px; height: 52px; padding: 0 28px; border-radius: 999px; font-size: 15px; letter-spacing: .06em; white-space: nowrap; transition: background .3s, color .3s, transform .3s var(--ease), border-color .3s; }
.pill-glass { background: rgba(251, 250, 246, .12); color: var(--bai); box-shadow: inset 0 0 0 1px rgba(251, 250, 246, .32); backdrop-filter: blur(8px); }
.pill-glass:hover { background: var(--bai); color: var(--ye); }
.pill-orange { background: var(--cheng); color: var(--ye); font-weight: 500; }
.pill-orange:hover { background: var(--cheng-400); }
.pill-arrow { padding-right: 9px; }
.pill-orange.pill-arrow i { width: 36px; height: 36px; border-radius: 50%; background: var(--ye); color: var(--bai); display: grid; place-items: center; transition: transform .35s var(--ease); }
.pill-orange.pill-arrow:hover i { transform: translateX(4px); }
.pill-line { box-shadow: inset 0 0 0 1px var(--ye); background: transparent; }
.pill-line.pill-arrow { padding-right: 24px; }
.pill-line svg { transition: transform .3s var(--ease); }
.pill-line:hover { background: var(--ye); color: var(--bai); }
.pill-line:hover svg { transform: translateX(4px); }
.pill-dark { background: var(--ye); color: var(--bai); }
.pill-dark:hover { background: var(--he-800); }

/* ---------- 页眉：首屏透明，滚动后变实 ---------- */
.site-header { position: fixed; inset: 0 0 auto; z-index: 60; color: var(--bai); transition: background .35s, color .35s, box-shadow .35s, transform .4s var(--ease); }
.site-header.is-stuck { background: rgba(251, 250, 246, .94); backdrop-filter: blur(14px) saturate(1.2); box-shadow: 0 1px 0 rgba(0, 48, 63, .08); color: var(--ye); }
.site-header.is-hidden { transform: translateY(-100%); }
.site-header.is-open { background: transparent; box-shadow: none; color: var(--bai); backdrop-filter: none; transform: none; }
.hd-in { display: flex; align-items: center; gap: 28px; height: 84px; padding: 0 var(--pad); }
.brand { position: relative; display: block; z-index: 2; flex: none; }
.brand img { height: 50px; width: auto; }
.brand-dark { position: absolute; left: 0; top: 0; opacity: 0; transition: opacity .3s; }
.brand-light { transition: opacity .3s; }
.site-header.is-stuck:not(.is-open) .brand-dark { opacity: 1; }
.site-header.is-stuck:not(.is-open) .brand-light { opacity: 0; }
.site-nav { display: flex; gap: 6px; margin: 0 auto; }
.site-nav a { font-size: 15px; padding: 8px 14px; white-space: nowrap; position: relative; }
.site-nav a::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 3px; height: 2px; background: var(--cheng); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease); }
.site-nav a:hover::after { transform: scaleX(1); }
.site-header.is-stuck .hd-cta { background: var(--ye); color: var(--bai); box-shadow: none; }
.hd-cta { height: 46px; padding: 0 22px; flex: none; }
.hd-tel { gap: 10px; letter-spacing: .04em; }
.nav-tel { display: none; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 0; background: none; padding: 0; margin-left: auto; position: relative; z-index: 2; }
.nav-toggle-bars, .nav-toggle-bars::before, .nav-toggle-bars::after { display: block; width: 24px; height: 2px; background: currentColor; border-radius: 2px; margin: 0 auto; transition: transform .3s, background .3s; }
.nav-toggle-bars { position: relative; }
.nav-toggle-bars::before, .nav-toggle-bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle-bars::before { top: -7px; } .nav-toggle-bars::after { top: 7px; }
.is-open .nav-toggle-bars { background: transparent; }
.is-open .nav-toggle-bars::before { transform: translateY(7px) rotate(45deg); }
.is-open .nav-toggle-bars::after { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 右侧悬浮入口 ---------- */
.float-bar { position: fixed; right: 18px; top: 50%; translate: 0 -50%; z-index: 55; display: grid; gap: 10px; }
.float-bar a { width: 46px; height: 46px; border-radius: 50%; background: var(--bai); color: var(--ye); display: grid; place-items: center; box-shadow: 0 8px 22px -8px rgba(0, 48, 63, .4); transition: background .25s, transform .3s var(--ease); }
.float-bar a:hover { background: var(--cheng); transform: scale(1.08); }

/* ---------- 首屏 ---------- */
.hero { position: relative; min-height: 100svh; min-height: max(660px, 100svh); background: var(--ye); color: var(--bai); overflow: hidden; isolation: isolate; display: grid; align-items: center; padding: 128px var(--pad) 170px; }
.hero-mark { position: absolute; z-index: -1; height: 150%; width: auto; right: -8%; top: -10%; opacity: .045; pointer-events: none; }
.hero-in { width: 100%; max-width: 1360px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(32px, 5vw, 90px); align-items: center; }
.hero-kicker { font-size: 15px; letter-spacing: .24em; color: var(--chenwu); margin-bottom: 28px; }
.hero h1 { font-size: clamp(36px, 4.6vw, 70px); font-weight: 400; line-height: 1.34; letter-spacing: .03em; margin-bottom: 44px; }
.hero h1 span { display: inline-block; }
.hero h1 span:first-child { margin-right: .4em; }
.hero-act { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-books { position: relative; width: 100%; max-width: 560px; margin-right: 40px; justify-self: end; aspect-ratio: 1.08; }
.hero-books .bk { position: absolute; width: 44%; box-shadow: 0 30px 50px -26px rgba(0, 0, 0, .65), 0 2px 0 rgba(255, 255, 255, .04) inset; }
.hb1 { left: 0; top: 16%; transform: rotate(-7deg); z-index: 1; }
.hb2 { left: 28%; top: 0; z-index: 3; }
.hb3 { left: 58%; top: 15%; transform: rotate(7deg); z-index: 2; }
.js .hero-books .bk { animation: rise 1.2s var(--ease) both; }
.js .hero-books .hb2 { animation-delay: .15s; } .js .hero-books .hb3 { animation-delay: .3s; }

/* ---------- 书籍封面（版式示意） ---------- */
.bk { --bg: var(--he-700); --fg: var(--bai); --a1: var(--bai); --a2: var(--ye); position: relative; aspect-ratio: 3 / 4; container-type: inline-size; background: var(--bg); color: var(--fg); border-radius: 4px 10px 10px 4px; overflow: hidden; }
.bk::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4.5%; background: rgba(0, 0, 0, .13); z-index: 2; }
.bk-arc { position: absolute; left: 0; bottom: 0; width: 100%; aspect-ratio: 1; }
.bk-arc svg { width: 100%; height: 100%; }
.bk-mark { position: absolute; left: 10cqw; top: 8cqw; width: 13cqw; height: auto; }
.bk-no { position: absolute; right: 9cqw; top: 8cqw; font-size: 13cqw; font-weight: 300; line-height: 1; letter-spacing: -.01em; }
.bk-name { position: absolute; left: 10cqw; right: 6cqw; top: 36cqw; font-size: 10cqw; font-weight: 500; line-height: 1.2; letter-spacing: .04em; }
.bk-sub { position: absolute; left: 10cqw; right: 6cqw; top: 50cqw; font-size: 6.2cqw; letter-spacing: .06em; opacity: .9; }
.bk1 { --bg: var(--he-700); --fg: var(--bai); --a1: var(--bai); --a2: var(--ye); }
.bk2 { --bg: var(--bai); --fg: var(--ye); --a1: var(--ye); --a2: var(--cheng); box-shadow: inset 0 0 0 1px var(--line); }
.bk3 { --bg: var(--cheng); --fg: var(--ye); --a1: var(--bai); --a2: var(--ye); }
.bk4 { --bg: var(--ye); --fg: var(--bai); --a1: var(--cheng); --a2: var(--he); }
.bk5 { --bg: var(--mitang); --fg: var(--ye); --a1: var(--he); --a2: var(--huang); }
.bk6 { --bg: var(--chenwu); --fg: var(--ye); --a1: var(--he-700); --a2: var(--cheng); }
.hero-books .bk2 { box-shadow: 0 30px 50px -26px rgba(0, 0, 0, .65); }

/* ---------- 白色面板 ---------- */
.sheet { position: relative; z-index: 3; margin-top: -84px; background: var(--bai); border-radius: 84px 84px 0 0; padding: 96px 0 130px; }
.rule-title { display: flex; align-items: center; justify-content: center; gap: 28px; font-size: 14px; color: var(--muted); letter-spacing: .06em; }
.rule-title::before, .rule-title::after { content: ""; flex: 0 1 260px; height: 1px; background: var(--line); }
.logos { overflow: hidden; margin: 36px 0 84px; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.logos-track { display: flex; width: max-content; animation: slide 70s linear infinite; }
.logos-track span { padding: 0 40px; font-size: 21px; font-weight: 500; letter-spacing: .05em; color: #9AA9A6; white-space: nowrap; }
@keyframes slide { to { transform: translateX(-50%); } }
.intro-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 48px; }
.statement { font-size: clamp(22px, 2.3vw, 33px); line-height: 1.75; max-width: 25em; font-weight: 400; }
.statement mark { background: linear-gradient(transparent 62%, rgba(244, 154, 113, .6) 62%); color: inherit; padding: 0 .08em; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; margin-top: 92px; }
.stats > div { border-top: 1px solid var(--ye); padding-top: 22px; }
.stats dt { font-size: clamp(48px, 5vw, 76px); font-weight: 300; line-height: 1.05; letter-spacing: -.02em; }
.stats dd { margin-top: 10px; font-size: 17px; font-weight: 500; line-height: 1.5; }
.stats small { display: block; font-size: 13.5px; font-weight: 400; color: var(--muted); }

/* ---------- 通用标题 ---------- */
.eyebrow-head { margin-bottom: 20px; }
.eyebrow-head.center { text-align: center; }
.eb { font-size: 14px; letter-spacing: .16em; color: rgba(0, 48, 63, .75); }
.eyebrow-head h2 { margin-top: 16px; font-size: clamp(32px, 4vw, 56px); letter-spacing: .02em; }
.hl { background: linear-gradient(transparent 64%, rgba(244, 154, 113, .62) 64%); padding: 0 .06em; }
.eb-lead { max-width: 34em; margin: 20px auto 0; color: var(--ye-600); }
.eyebrow-head .pill { margin-top: 28px; }

/* ---------- 理念：整幅橙色吸顶三栏 ---------- */
.shelf { background: var(--cheng); padding: 130px 0 190px; position: relative; z-index: 1; }
.svc { display: grid; grid-template-columns: 260px 270px minmax(0, 1fr); gap: 56px; max-width: 1180px; margin: 84px auto 0; align-items: start; }
.svc-left, .svc-mid { position: sticky; top: max(96px, calc(50vh - 170px)); }
.svc-art { position: relative; width: 255px; height: 340px; }
.svc-art .bk { position: absolute; inset: 0; width: 100%; opacity: 0; transform: translateY(18px) rotate(-3deg); transition: opacity .55s ease, transform .8s var(--ease); box-shadow: 0 34px 50px -26px rgba(0, 48, 63, .6); }
.svc-art .bk.on { opacity: 1; transform: none; }
.svc-mid { height: 340px; display: flex; align-items: center; gap: 22px; }
.svc-label { font-size: 17px; font-weight: 500; flex: none; letter-spacing: .06em; }
.svc-list { position: relative; flex: 1; }
.svc-list li { height: 46px; display: flex; align-items: center; gap: 14px; font-size: 19px; opacity: .32; transition: opacity .4s; white-space: nowrap; cursor: pointer; }
.svc-list li i { width: 9px; height: 9px; border-radius: 50%; background: var(--ye); flex: none; opacity: 0; transition: opacity .4s; }
.svc-list li.on { opacity: 1; font-weight: 500; }
.svc-list li.on i { opacity: 1; }
.svc-right { padding-bottom: 14vh; }
.svc-card { min-height: 300px; border-radius: 38px; border: 1px solid rgba(0, 48, 63, .45); padding: 46px 52px; margin-bottom: 26px; display: flex; flex-direction: column; justify-content: center; transition: background .4s, border-color .4s, transform .5s var(--ease); }
.svc-card.on { background: rgba(251, 250, 246, .22); border-color: var(--ye); }
.sc-no { font-size: 14px; font-weight: 700; letter-spacing: .14em; }
.svc-card h3 { font-size: clamp(26px, 2.5vw, 34px); margin: 16px 0 14px; letter-spacing: .06em; }
.svc-card p:last-child { font-size: 18px; max-width: 24em; }

/* ---------- 淡橙底：方针、创始人 ---------- */
.peach { background: var(--chengwu); padding: 40px 0 90px; }
.peach-a { padding: 120px 0 90px; }
.peach-b { padding: 0 0 150px; }
.fang-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; margin-top: 70px; }
.fcard:nth-child(even) { margin-top: 44px; }
.fimg { position: relative; aspect-ratio: 4 / 5; border-radius: 30px; display: grid; place-items: center; overflow: hidden; }
.fimg::before { content: ""; position: absolute; width: 70%; aspect-ratio: 1; border-radius: 50%; background: rgba(251, 250, 246, .14); right: -22%; top: -14%; }
.fimg svg { position: relative; transition: transform .8s var(--ease); }
.fcard:hover .fimg svg { transform: scale(1.1) rotate(-4deg); }
.fimg b { position: absolute; left: 24px; top: 20px; font-size: 15px; letter-spacing: .12em; }
.f1 { background: var(--he-700); color: var(--mitang); }
.f2 { background: var(--ye); color: var(--cheng); }
.f3 { background: var(--cheng); color: var(--ye); }
.f4 { background: var(--mitang); color: var(--he-700); }
.fcard h3 { font-size: 26px; margin: 24px 0 8px; letter-spacing: .08em; }
.fcard p { font-size: 15.5px; line-height: 1.8; color: var(--ye-600); }
.chip { display: inline-block; margin-top: 16px; padding: 3px 15px; border-radius: 999px; background: rgba(0, 48, 63, .07); font-size: 13px; font-weight: 500; }
.dfsq { margin-top: 56px; display: flex; align-items: center; flex-wrap: wrap; gap: 14px 36px; padding: 24px 34px; background: var(--bai); border-radius: 26px; }
.dfsq-k { font-size: 19px; font-weight: 500; letter-spacing: .12em; }
.dfsq ul { display: flex; gap: 10px; flex-wrap: wrap; }
.dfsq li { display: inline-flex; align-items: center; gap: 10px; padding: 6px 18px 6px 6px; border-radius: 999px; background: var(--chengwu); font-size: 15px; }
.dfsq ul.plain li { padding: 6px 18px; }
.dfsq + .dfsq { margin-top: 18px; }
.dfsq li b { font-size: 18px; font-weight: 500; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; background: var(--cheng); }
.dfsq li:nth-child(2) b { background: var(--huang); }
.dfsq li:nth-child(3) b { background: var(--he-300); }
.dfsq li:nth-child(4) b { background: var(--chenwu); }
.dfsq-t { margin-left: auto; color: var(--ye-600); letter-spacing: .06em; }

.founder-card { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); border-radius: 40px; overflow: hidden; background: var(--cheng); }
.fc-left { position: relative; padding: clamp(36px, 5vw, 72px); isolation: isolate; overflow: hidden; }
.fc-mark { position: absolute; z-index: -1; height: 74%; width: auto; right: -7%; bottom: -10%; opacity: .08; }
.fc-left h2 { margin-top: 14px; font-size: clamp(44px, 4.8vw, 68px); font-weight: 500; letter-spacing: .1em; line-height: 1.2; }
.fc-left h2 small { display: block; margin-top: 12px; font-size: 18px; font-weight: 400; letter-spacing: .06em; }
.fc-text { margin: 26px 0 30px; max-width: 30em; font-size: 16.5px; }
.fc-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 44px; }
.fc-tags li { padding: 5px 18px; border-radius: 999px; box-shadow: inset 0 0 0 1px rgba(0, 48, 63, .55); font-size: 14px; }
.fc-quote { margin-top: 34px; font-size: clamp(20px, 1.9vw, 26px); line-height: 1.6; max-width: 20em; }
.fc-quote cite { display: block; margin-top: 8px; font-size: 13.5px; font-style: normal; opacity: .75; }
.fc-right { position: relative; min-height: 420px; }
.fc-right svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.portrait-tag { position: absolute; left: 50%; bottom: 24px; translate: -50% 0; font-size: 12px; padding: 4px 14px; border-radius: 999px; background: rgba(251, 250, 246, .9); color: var(--muted); white-space: nowrap; }

/* ---------- 学术成果：列表区 ---------- */

/* ---------- 最新动态 ---------- */
.news { background: #F7F8F6; border-radius: 84px 84px 0 0; padding: 120px 0 130px; position: relative; z-index: 2; margin-top: -84px; }
.nlist { margin-top: 60px; }
.nrow a { display: grid; grid-template-columns: 220px minmax(0, 1.2fr) minmax(0, 1fr) 48px; gap: 24px 36px; align-items: center; padding: 34px 12px; border-radius: 24px; transition: background .35s, padding .4s var(--ease); }
.nrow:hover a { background: var(--bai); padding-left: 28px; padding-right: 28px; }
.nrow-meta { display: flex; align-items: center; gap: 16px; font-size: 14px; color: var(--muted); }
.tag { padding: 3px 15px; border-radius: 999px; box-shadow: inset 0 0 0 1px var(--ye); font-size: 13px; color: var(--ye); white-space: nowrap; }
.nrow h3 { font-size: clamp(20px, 2vw, 28px); }
.nrow-d { font-size: 15.5px; line-height: 1.9; color: var(--muted); }
.nrow-go { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: var(--ye); color: var(--bai); transition: background .3s, color .3s, transform .35s var(--ease); }
.nrow:hover .nrow-go { background: var(--cheng); color: var(--ye); transform: translateX(4px); }

/* ---------- 教程：三列大卡 ---------- */
.lessons { background: var(--bai); padding: 130px 0 140px; position: relative; z-index: 3; margin-top: -84px; border-radius: 84px 84px 0 0; }
.lib-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 44px 0 56px; }
.lib-tabs button { border: 0; background: transparent; box-shadow: inset 0 0 0 1px rgba(0, 48, 63, .3); padding: 9px 22px; border-radius: 999px; font-size: 15px; transition: background .25s, box-shadow .25s, color .25s; }
.lib-tabs button:hover { box-shadow: inset 0 0 0 1px var(--ye); }
.lib-tabs button[aria-selected="true"] { background: var(--ye); color: var(--bai); box-shadow: none; }
.lgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 60px 36px; align-items: start; }
.lcard[hidden] { display: none; }
.lcard:nth-child(3n+2) { margin-top: 70px; }
.lgrid.is-filtered .lcard { margin-top: 0; }
.lcard.fade-in { animation: rise .55s var(--ease) both; }
@keyframes rise { from { opacity: 0; transform: translateY(24px); } }
.lcard a { display: block; }
.lthumb { position: relative; aspect-ratio: 4 / 5; border-radius: 30px; display: grid; place-items: center; overflow: hidden; }
.lthumb::before { content: ""; position: absolute; width: 62%; aspect-ratio: 1; border-radius: 50%; background: rgba(251, 250, 246, .13); right: -16%; top: -12%; }
.la { position: relative; transition: transform .9s var(--ease); }
.lcard:hover .la { transform: scale(1.12) rotate(-4deg); }
.lt { position: absolute; left: 20px; top: 20px; padding: 4px 14px; border-radius: 999px; background: rgba(251, 250, 246, .92); color: var(--ye); font-size: 13px; font-weight: 500; letter-spacing: .06em; }
.lp { position: absolute; right: 20px; bottom: 20px; width: 54px; height: 54px; border-radius: 50%; background: var(--bai); color: var(--ye); display: grid; place-items: center; transition: background .3s, transform .35s var(--ease); }
.lcard:hover .lp { background: var(--cheng); transform: scale(1.1); }
.lcard h3 { font-size: clamp(20px, 1.7vw, 24px); margin: 24px 0 12px; font-weight: 500; transition: color .25s; }
.lcard:hover h3 { color: var(--he-700); }
.ltags { display: flex; align-items: center; gap: 12px; font-size: 13.5px; }
.ltags b { padding: 3px 14px; border-radius: 999px; background: #EEF0EC; font-weight: 500; }
.ltags span { color: var(--muted); }
.t1 { background: var(--he-700); color: var(--mitang); } .t2 { background: var(--chenwu); color: var(--he-700); } .t3 { background: var(--huang); color: var(--ye); }
.t4 { background: var(--ye); color: var(--cheng); } .t5 { background: var(--mitang); color: var(--ye); } .t6 { background: var(--cheng); color: var(--ye); }
.t7 { background: var(--chengwu); color: var(--cheng-700); } .t8 { background: #E4E9EA; color: var(--ye); } .t9 { background: var(--he); color: var(--bai); }

/* ---------- 应用与案例 ---------- */
.cases { background: var(--chenwu); padding: 130px 0 140px; position: relative; z-index: 4; margin-top: -84px; border-radius: 84px 84px 0 0; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 70px; }
.ccard { background: var(--bai); border-radius: 32px; padding: 44px 38px 40px; transition: transform .5s var(--ease); }
.ccard:hover { transform: translateY(-8px); }
.ccard svg { color: var(--he-700); }
.ck { margin-top: 36px; font-size: 13.5px; color: var(--muted); }
.ccard h3 { font-size: 28px; margin: 8px 0 12px; }
.ccard p:last-child { font-size: 15.5px; color: var(--ye-600); line-height: 1.85; }

/* ---------- 学习与合作 ---------- */
.grow { background: var(--bai); padding: 130px 0 150px; position: relative; z-index: 5; margin-top: -84px; border-radius: 84px 84px 0 0; }
.paths { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ye); margin-top: 70px; }
.path { padding: 34px clamp(18px, 2.4vw, 40px) 40px 0; border-right: 1px solid var(--line); margin-right: clamp(18px, 2.4vw, 40px); }
.path:last-child { border-right: 0; margin-right: 0; }
.path-no { font-size: 15px; font-weight: 700; letter-spacing: .14em; color: var(--cheng-700); }
.path h3 { font-size: clamp(26px, 2.6vw, 36px); margin: 8px 0 12px; }
.path-for { color: var(--ye-600); font-size: 15.5px; line-height: 1.75; min-height: 3.5em; }
.path ol { margin-top: 24px; counter-reset: s; }
.path li { counter-increment: s; display: flex; gap: 14px; align-items: baseline; padding: 12px 0; border-top: 1px solid var(--line); font-size: 16px; transition: padding .3s var(--ease); }
.path li::before { content: counter(s); font-family: "Nunito", sans-serif; font-weight: 700; font-size: 13px; width: 24px; height: 24px; flex: none; border-radius: 50%; display: inline-grid; place-items: center; background: var(--chengwu); transform: translateY(-1px); }
.path li:hover { padding-left: 8px; }

/* ---------- 联系我们 ---------- */
.contact { background: var(--chenwu); padding: 130px 0 150px; position: relative; z-index: 6; margin-top: -84px; border-radius: 84px 84px 0 0; }
.ct-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr); gap: clamp(40px, 6vw, 110px); align-items: center; }
.ct-lead { margin-left: 0; }
.ct-list { margin-top: 36px; display: grid; gap: 14px; }
.ct-list > div { display: grid; grid-template-columns: 110px 1fr; gap: 18px; align-items: baseline; padding: 20px 28px; background: var(--bai); border-radius: 22px; }
.ct-list dt { font-size: 14px; color: var(--muted); letter-spacing: .08em; }
.ct-list dd { font-size: 21px; font-weight: 500; }
.ct-list dd a { transition: color .25s; }
.ct-list dd a:hover { color: var(--he-700); }
.ct-list small { display: block; margin-top: 2px; font-size: 12.5px; font-weight: 400; color: var(--muted); }
.ct-qr { margin: 0; justify-self: center; text-align: center; }
.qr-box { width: min(280px, 60vw); aspect-ratio: 1; border-radius: 30px; background: var(--bai); display: grid; place-items: center; box-shadow: 0 30px 50px -34px rgba(0, 48, 63, .45); outline: 2px dashed var(--he-300); outline-offset: -16px; }
.qr-box img { width: 24%; height: auto; opacity: .85; }
.ct-qr figcaption { margin-top: 20px; font-size: 17px; font-weight: 500; }
.ct-qr small { display: block; font-size: 12.5px; font-weight: 400; color: var(--muted); }

/* ---------- 页脚 ---------- */
.site-footer { position: relative; z-index: 7; margin-top: -84px; border-radius: 84px 84px 0 0; background: var(--ye); color: var(--bai); padding: 130px 0 56px; overflow: hidden; isolation: isolate; }
.ft-mark { position: absolute; z-index: -1; height: 125%; width: auto; right: -2%; bottom: -26%; opacity: .07; pointer-events: none; }
.ft-top { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.site-footer h2 { font-size: clamp(32px, 4.2vw, 62px); font-weight: 500; line-height: 1.3; max-width: 15em; }
.ft-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.ft-cols { margin-top: 120px; display: grid; grid-template-columns: 1.3fr .7fr .7fr 1.3fr auto; gap: 40px; align-items: start; }
.ft-brand img { height: 58px; width: auto; }
.ft-nav p, .ft-contact p { font-size: 13px; color: var(--ye-300); margin-bottom: 10px; letter-spacing: .1em; }
.ft-nav a { display: block; padding: 4px 0; font-size: 15px; }
.ft-nav a:hover { text-decoration: underline; text-underline-offset: 4px; }
.ft-contact { display: grid; gap: 4px; }
.ft-tel { display: inline-flex; align-items: center; gap: 10px; font-size: 24px; font-weight: 500; margin-bottom: 8px; }
.ft-tel svg { color: var(--cheng); }
.ft-line { font-size: 15px; }
.ft-dim { font-size: 12.5px; color: var(--ye-300); margin-top: 6px; }
.ft-qr { display: grid; gap: 10px; justify-items: center; font-size: 13px; text-align: center; }
.ft-qr small { display: block; color: var(--ye-300); }
.qr-sm { width: 112px; border-radius: 16px; outline-offset: -8px; box-shadow: none; }
.ft-legal { margin-top: 70px; font-size: 13.5px; line-height: 1.95; color: var(--ye-200); max-width: 62em; }
.ft-legal p + p { margin-top: 6px; }
.ft-legal .dim { color: var(--ye-300); font-size: 12.5px; }

/* ---------- 进场 ---------- */
.js .reveal { opacity: 0; transform: translateY(32px); transition: opacity .9s ease, transform 1.1s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
.js .fcard:nth-child(2), .js .lcard:nth-child(3n+2), .js .ccard:nth-child(2), .js .path:nth-child(2), .js .stats > div:nth-child(2) { transition-delay: .1s; }
.js .fcard:nth-child(3), .js .lcard:nth-child(3n), .js .ccard:nth-child(3), .js .path:nth-child(3), .js .stats > div:nth-child(3) { transition-delay: .2s; }
.js .fcard:nth-child(4), .js .stats > div:nth-child(4) { transition-delay: .3s; }
.js .hero-in > * { animation: rise 1.1s var(--ease) both; }
.js .hero-in > :nth-child(2) { animation-delay: .1s; }
.js .hero-in > :nth-child(3) { animation-delay: .22s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .site-nav a { padding: 8px 10px; font-size: 14px; }
  .svc { grid-template-columns: 220px 230px minmax(0, 1fr); gap: 32px; }
  .svc-art { width: 224px; height: 299px; }
  .svc-mid { height: 300px; }
  .svc-card { padding: 38px 36px; }
  .fang-grid { grid-template-columns: repeat(2, 1fr); }
  .fcard:nth-child(even) { margin-top: 0; }
}
@media (max-width: 1020px) {
  .hd-cta { display: none; }
  .site-nav .nav-tel { display: inline-flex; align-items: center; gap: 12px; margin-top: 20px; font-size: clamp(22px, 6vw, 30px); color: var(--cheng); }
  .nav-toggle { display: block; }
  .site-nav { position: fixed; inset: 0; z-index: 1; flex-direction: column; justify-content: flex-start; justify-content: safe center; overflow-y: auto; gap: 4px; margin: 0; padding: 90px var(--pad) 40px; background: var(--ye); opacity: 0; visibility: hidden; transition: opacity .35s, visibility .35s; }
  .site-nav > * { flex-shrink: 0; }
  .is-open .site-nav { opacity: 1; visibility: visible; }
  .site-nav a { font-size: clamp(28px, 8vw, 42px); font-weight: 500; padding: 10px 0; letter-spacing: .08em; }
  .site-nav a::after { display: none; }
  .hd-in { height: 68px; }
  .brand img { height: 42px; }
}
@media (max-width: 960px) {
  .float-bar { display: none; }
  .hero { padding: 108px var(--pad) 130px; min-height: 0; }
  .hero-in { grid-template-columns: 1fr; }
  .hero-books { justify-self: center; max-width: 520px; }
  .hero-mark { height: 90%; right: -20%; top: 4%; }
  .nrow a { grid-template-columns: 1fr 44px; }
  .nrow-meta { grid-column: 1 / -1; }
  .nrow-d { grid-column: 1; }
  .nrow-go { grid-row: 2 / span 2; grid-column: 2; align-self: center; }
  .ct-grid { grid-template-columns: 1fr; }
  .ft-cols { grid-template-columns: 1fr 1fr; margin-top: 70px; }
  .ft-qr { justify-items: start; }
  .sheet, .news, .lessons, .cases, .grow, .contact, .site-footer { border-radius: 44px 44px 0 0; margin-top: -44px; }
  .sheet { margin-top: -60px; padding-top: 72px; }
  .intro-row { flex-direction: column; align-items: flex-start; }
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .svc { display: block; margin-top: 56px; }
  .svc-left, .svc-mid { display: none; }
  .svc-right { padding-bottom: 0; }
  .svc-card { min-height: 0; padding: 32px 30px; }
  .svc-card.on { background: transparent; border-color: rgba(0, 48, 63, .45); }
  .shelf { padding: 96px 0 150px; }
  .founder-card { grid-template-columns: 1fr; }
  .fc-right { min-height: 300px; order: -1; }
  .row { grid-template-columns: 1fr; gap: 20px; }
  .lgrid { grid-template-columns: repeat(2, 1fr); gap: 40px 22px; }
  .lcard:nth-child(3n+2) { margin-top: 0; }
  .lcard:nth-child(even) { margin-top: 44px; }
  .case-grid { grid-template-columns: 1fr; }
  .paths { grid-template-columns: 1fr; }
  .path { border-right: 0; margin-right: 0; padding-right: 0; border-bottom: 1px solid var(--line); }
  .path-for { min-height: 0; }
  .ft-cols { grid-template-columns: 1fr 1fr; margin-top: 70px; }
  .ft-legal { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .hero { padding: 96px var(--pad) 120px; }
  .hero h1 { font-size: 8vw; margin-bottom: 34px; }
  .rule-title::before, .rule-title::after { flex-basis: 24px; }
  .logos { margin: 28px 0 56px; }
  .fang-grid { grid-template-columns: 1fr 1fr; gap: 28px 14px; }
  .fcard h3 { font-size: 21px; }
  .fcard p { font-size: 14px; }
  .fimg svg { width: 64px; height: 64px; }
  .dfsq { padding: 22px; }
  .dfsq-t { margin-left: 0; }
  .lgrid { gap: 34px 12px; }
  .lthumb { border-radius: 22px; }
  .la { width: 64px; height: 64px; }
  .lt { left: 12px; top: 12px; font-size: 12px; padding: 3px 10px; }
  .lp { right: 12px; bottom: 12px; width: 42px; height: 42px; }
  .lcard h3 { font-size: 16px; margin-top: 16px; }
  .ltags { flex-wrap: wrap; gap: 4px 8px; font-size: 12px; }
  .ft-cols { grid-template-columns: 1fr 1fr; }
  .ct-list > div { grid-template-columns: 1fr; gap: 4px; padding: 16px 20px; }
  .hero-books .bk { box-shadow: 0 18px 28px -16px rgba(0,0,0,.65); }
  .ft-brand, .ft-contact { grid-column: 1 / -1; }
  .ft-tel { font-size: 22px; white-space: nowrap; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-parallax] { transform: none !important; }
  .logos-track, .js .hero-books .bk, .js .hero-in > *, .lcard.fade-in { animation: none !important; }
}