/* ============================================================
   宠云科技官网 v3 · 与逗宠小程序同一套品牌语言
   森野绿 #0E5A47 · 暖米白 #F3F0E8 · 香槟金 #E5C57D
   ============================================================ */
:root {
  --brand: #0E5A47;
  --brand-deep: #062F25;
  --brand-night: #041D17;
  --brand-soft: #EAF3EF;
  --cream: #F3F0E8;
  --ink: #22302A;
  --ink2: #5C6B63;
  --line: #E3DDD0;
  --sf: #FFFFFF;
  --coral: #D77C69;
  --gold: #E5C57D;
  --gold-deep: #B48B39;
  --ivory: #FBF6E9;
  --serif: "Songti SC", "STSong", "Noto Serif SC", serif;
  --sans: -apple-system, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
.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; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  font-family: var(--sans);
  background: var(--cream);
  color: var(--ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 32px; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; gap: 40px;
  padding: 0 32px; height: 76px;
  transition: background .3s, box-shadow .3s, color .3s;
}
.nav.scrolled, .nav.open {
  background: rgba(243, 240, 232, .9);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line);
}
.nav:not(.scrolled):not(.open) { color: #fff; }
.nav-brand { display: flex; align-items: center; gap: 12px; position: relative; z-index: 2; }
.nav-brand img { width: 40px; height: 40px; border-radius: 10px; }
.nav-name { font-size: 19px; font-weight: 800; letter-spacing: .5px; line-height: 1.15; }
.nav-name i { display: block; font-style: normal; font-size: 10px; font-weight: 600; letter-spacing: 2px; opacity: .55; }
.nav-links { display: flex; gap: 32px; margin-left: auto; }
.nav-links a { font-size: 15px; font-weight: 600; opacity: .85; transition: opacity .2s; }
.nav-links a:hover { opacity: 1; }
.nav-cta {
  font-size: 14px; font-weight: 700; padding: 10px 20px; border-radius: 999px;
  background: var(--gold); color: #1B1500; white-space: nowrap;
  box-shadow: 0 6px 18px -8px rgba(229, 197, 125, .75);
}
.nav.scrolled .nav-cta { box-shadow: none; }
.nav-burger { display: none; background: none; border: none; width: 40px; height: 40px; cursor: pointer; position: relative; color: inherit; }
.nav-burger span { position: absolute; left: 8px; right: 8px; height: 2px; background: currentColor; transition: .3s; }
.nav-burger span:nth-child(1) { top: 14px; }
.nav-burger span:nth-child(2) { top: 24px; }
.nav.open .nav-burger span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.nav.open .nav-burger span:nth-child(2) { top: 19px; transform: rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 54px; padding: 0 34px; border-radius: 14px;
  font-size: 16px; font-weight: 700; transition: transform .15s, box-shadow .2s, background .2s;
}
.btn:active { transform: scale(.97); }
.btn.solid, .btn.gold-solid { background: var(--gold); color: #1B1500; box-shadow: 0 14px 34px -14px rgba(229, 197, 125, .52); }
.btn.ghost { border: 1.5px solid rgba(255, 255, 255, .4); color: #fff; }
.btn.ghost:hover { background: rgba(255, 255, 255, .08); }

.eyebrow { font-size: 13px; font-weight: 800; letter-spacing: 3px; color: var(--brand); opacity: .9; }
.eyebrow.light { color: rgba(255, 255, 255, .6); }
.eyebrow.gold { color: var(--gold); letter-spacing: 4px; }

/* ---------- HERO 轮播：同一舞台，三段叙事 ---------- */
.hero {
  position: relative; min-height: 620px; height: clamp(620px, 78svh, 760px);
  background: var(--brand-night); overflow: hidden; isolation: isolate;
}
.slides { position: absolute; inset: 0; }
.slide {
  position: absolute; inset: 0; overflow: hidden; color: #fff; pointer-events: none;
  opacity: 0; visibility: hidden; transform: scale(1.015);
  transition: opacity .72s ease, transform 1.1s cubic-bezier(.2,.75,.2,1), visibility 0s linear .72s;
}
.slide.is-on { opacity: 1; visibility: visible; transform: none; pointer-events: auto; transition-delay: 0s; }
.hero-shell {
  position: relative; z-index: 2; width: min(1200px, 100%); min-height: 100%; margin: 0 auto; padding: 126px 44px 110px;
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(310px, .95fr); align-items: center; gap: clamp(32px, 7vw, 112px);
}
.hero-copy { max-width: 650px; }
.hero-kicker { display: flex; align-items: center; gap: 12px; color: rgba(251,246,233,.66); font-size: 11px; font-weight: 800; letter-spacing: 2.4px; }
.hero-kicker i { display: inline-block; width: 30px; height: 1px; background: rgba(229,197,125,.7); }
.hero-kicker.gold { color: rgba(251,246,233,.7); }
.hero-kicker.gold span:first-child { color: var(--gold); }
.hero-copy h1 { margin-top: 22px; font-family: var(--serif); font-size: clamp(43px, 4.5vw, 64px); font-weight: 900; line-height: 1.22; letter-spacing: .4px; text-wrap: balance; }
.hero-copy h1 strong { font: inherit; color: var(--ivory); }
.hero-copy p { margin-top: 20px; max-width: 590px; color: rgba(251,246,233,.77); font-size: 16px; line-height: 1.95; }
.hero-actions { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
.hero-actions .btn { min-width: 156px; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 26px; color: rgba(251,246,233,.52); font-size: 12px; font-weight: 650; letter-spacing: .5px; }
.hero-proof span { display: inline-flex; align-items: center; gap: 8px; }
.hero-proof span::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 4px rgba(229,197,125,.08); }
.slide-credit { position: absolute; right: 28px; bottom: 24px; z-index: 3; color: rgba(251,246,233,.35); font-size: 10px; letter-spacing: 1.4px; }

/* 品牌首屏 */
.slide-brand { background: linear-gradient(124deg, #062F25 0%, #0B4B3B 49%, #063128 100%); }
.brand-bg { position: absolute; inset: 0; overflow: hidden; }
.brand-grid { position: absolute; inset: 0; opacity: .26; background-image: linear-gradient(rgba(251,246,233,.065) 1px, transparent 1px), linear-gradient(90deg, rgba(251,246,233,.065) 1px, transparent 1px); background-size: 88px 88px; -webkit-mask-image: linear-gradient(90deg, #000 20%, transparent 86%); mask-image: linear-gradient(90deg, #000 20%, transparent 86%); }
.brand-orbit { position: absolute; border: 1px solid rgba(229,197,125,.16); border-radius: 50%; transform: rotate(-18deg); }
.orbit-one { width: 1020px; height: 620px; right: -280px; top: -155px; }
.orbit-two { width: 720px; height: 440px; right: -150px; bottom: -250px; border-color: rgba(251,246,233,.1); }
.brand-light { position: absolute; width: 680px; height: 680px; right: -80px; top: 50%; transform: translateY(-50%); border-radius: 50%; background: radial-gradient(circle, rgba(229,197,125,.19) 0, rgba(87,151,125,.12) 28%, transparent 67%); filter: blur(2px); }
.hero-copy-brand h1 strong { background: linear-gradient(112deg, #FFF8E5 5%, #E5C57D 67%, #C39845 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand-mark-stage { position: relative; justify-self: center; width: min(360px, 100%); aspect-ratio: 1; display: grid; place-items: center; }
.brand-mark-stage::before { content: ""; position: absolute; inset: 16%; border-radius: 50%; background: radial-gradient(circle, rgba(251,246,233,.13), rgba(251,246,233,.025) 55%, transparent 68%); filter: blur(1px); }
.brand-mark-stage img { position: relative; z-index: 2; width: 142px; height: 142px; object-fit: cover; border-radius: 35px; box-shadow: 0 34px 80px rgba(1,25,19,.4), 0 0 0 1px rgba(251,246,233,.2); }
.brand-mark-ring { position: absolute; inset: 4%; border: 1px solid rgba(229,197,125,.34); border-radius: 50%; animation: brandOrbit 18s linear infinite; }
.brand-mark-ring.inner { inset: 18%; border-color: rgba(251,246,233,.22); animation-direction: reverse; animation-duration: 13s; }
.brand-mark-caption { position: absolute; z-index: 3; bottom: 7%; left: 50%; transform: translateX(-50%); width: max-content; text-align: center; color: rgba(251,246,233,.78); }
.brand-mark-caption b { display: block; font-size: 15px; letter-spacing: 3px; }
.brand-mark-caption span { display: block; margin-top: 5px; color: rgba(251,246,233,.46); font-size: 10px; letter-spacing: 2px; }

/* 逗宠产品首屏：照片被品牌色收束，而不是另起一套色彩 */
.slide-app { background: #06372B; }
.cat-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 46%; filter: saturate(.63) contrast(1.08) brightness(.78); transform: scale(1.055); }
.slide-app.is-on .cat-img { animation: appPhotoDrift 13s ease-out both; }
.app-tone { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(3,28,22,.99) 0%, rgba(5,45,34,.94) 35%, rgba(8,71,54,.68) 57%, rgba(6,48,37,.18) 78%), linear-gradient(180deg, rgba(5,38,29,.14), rgba(5,38,29,.42)); }
.app-tone::before { content: ""; position: absolute; inset: 0; opacity: .42; background: radial-gradient(circle at 72% 42%, transparent 0 132px, rgba(229,197,125,.16) 133px 134px, transparent 135px 226px, rgba(251,246,233,.08) 227px 228px, transparent 229px); }
.hero-copy-app h1 strong { color: var(--gold); }
.hero-copy-app h1 { font-size: clamp(40px, 4vw, 56px); }
.app-side-note { position: absolute; right: clamp(8px, 5vw, 68px); bottom: 28%; display: flex; align-items: flex-end; gap: 11px; transform: rotate(90deg); transform-origin: right bottom; color: rgba(251,246,233,.46); letter-spacing: 3px; }
.app-side-note span { font-size: 9px; font-weight: 800; }
.app-side-note b { color: var(--gold); font-family: var(--serif); font-size: 17px; }

/* CFA 赛事首屏 */
.slide-cfa { background: linear-gradient(130deg, #062F25, #0A4939 48%, #082E25); }
.cfa-bg { position: absolute; inset: 0; overflow: hidden; background: radial-gradient(700px 420px at 82% 40%, rgba(229,197,125,.22), transparent 68%), radial-gradient(600px 360px at 15% 106%, rgba(108,164,139,.17), transparent 68%), linear-gradient(130deg, #062F25 0%, #0B4C3B 50%, #052C23 100%); }
.cfa-grid { position: absolute; inset: 0; background-image: linear-gradient(120deg, transparent 0 48%, rgba(251,246,233,.055) 48.05% 48.2%, transparent 48.25% 100%), repeating-linear-gradient(90deg, transparent 0 95px, rgba(251,246,233,.035) 96px 97px); opacity: .7; }
.cfa-arch { position: absolute; border: 1px solid rgba(229,197,125,.25); border-radius: 50%; }
.arch-a { width: 930px; height: 930px; right: -268px; top: -278px; }
.arch-b { width: 610px; height: 610px; right: -108px; top: -116px; border-color: rgba(251,246,233,.12); }
.hero-copy-cfa h1 { color: var(--ivory); font-size: clamp(40px, 3.9vw, 54px); }
.hero-copy-cfa .hero-kicker { font-size: 10px; letter-spacing: 1.9px; }
.hero-copy-cfa h1 strong { background: linear-gradient(112deg, #FFF8E5 3%, #E5C57D 57%, #B48B39 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.cfa-facts { align-self: center; display: grid; grid-template-columns: 1fr 1fr; gap: 1px; width: min(430px, 100%); overflow: hidden; background: rgba(229,197,125,.25); border: 1px solid rgba(229,197,125,.3); border-radius: 24px; box-shadow: 0 34px 84px rgba(1,25,19,.28); backdrop-filter: blur(14px); }
.cfa-facts div { min-height: 118px; padding: 22px 20px; background: rgba(4,35,26,.62); }
.cfa-facts dt { color: rgba(229,197,125,.84); font-size: 10px; font-weight: 800; letter-spacing: 2.4px; }
.cfa-facts dd { margin-top: 10px; color: var(--ivory); font-family: var(--serif); font-size: 16px; font-weight: 800; line-height: 1.55; }

/* 轮播控制：进度、页码和左右方向保持在同一位置 */
.hero-controls { position: absolute; z-index: 8; left: 50%; bottom: 28px; width: min(1112px, calc(100% - 88px)); transform: translateX(-50%); display: flex; align-items: center; gap: 18px; }
.hero-count { display: flex; align-items: baseline; gap: 7px; min-width: 74px; color: rgba(251,246,233,.52); font-size: 11px; font-weight: 800; letter-spacing: 1px; }
.hero-count b { color: var(--gold); font-size: 16px; }
.hero-count i { width: 23px; height: 1px; background: rgba(251,246,233,.36); }
.dots { display: flex; align-items: center; gap: 8px; }
.dot { position: relative; width: 36px; height: 38px; padding: 0; border: 0; background: transparent; cursor: pointer; }
.dot::before { content: ""; position: absolute; top: 50%; right: 0; left: 0; height: 4px; border-radius: 99px; background: rgba(251,246,233,.28); transform: translateY(-50%); transition: width .3s ease, background .3s ease; }
.dot.is-on::before { width: 100%; background: var(--gold); }
.dot:focus-visible, .hero-arrow:focus-visible { outline: 2px solid var(--ivory); outline-offset: 4px; }
.hero-arrows { display: flex; gap: 8px; margin-left: auto; }
.hero-arrow { width: 42px; height: 42px; padding: 0; border: 1px solid rgba(251,246,233,.3); border-radius: 50%; background: rgba(4,35,26,.18); color: var(--ivory); display: grid; place-items: center; cursor: pointer; transition: background .2s ease, border-color .2s ease, transform .2s ease; }
.hero-arrow:hover { background: rgba(251,246,233,.12); border-color: rgba(251,246,233,.62); transform: translateY(-1px); }
.hero-arrow svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.hero-scroll { position: absolute; z-index: 7; right: 34px; bottom: 106px; display: flex; flex-direction: column; align-items: center; gap: 9px; color: rgba(251,246,233,.52); font-size: 9px; font-weight: 800; letter-spacing: 3px; writing-mode: vertical-rl; }
.hero-scroll i { width: 1px; height: 32px; background: linear-gradient(rgba(251,246,233,.72), transparent); animation: cueDrop 2.2s ease-in-out infinite; transform-origin: top; }
@keyframes cueDrop { 0% { transform: scaleY(0); } 55% { transform: scaleY(1); } 100% { transform: scaleY(1) translateY(7px); opacity: 0; } }
@keyframes brandOrbit { to { transform: rotate(360deg); } }
@keyframes appPhotoDrift { from { transform: scale(1.055) translate3d(0, 0, 0); } to { transform: scale(1.1) translate3d(-1.2%, -.8%, 0); } }

/* ---------- 通用区块 ---------- */
.sec { padding: 112px 0; }
.sec-tight { padding: 96px 0; }
.sec-dark { background: var(--brand-deep); color: #fff; }
.sec-head { max-width: 760px; margin-bottom: 56px; }
.sec-head h2 { font-family: var(--serif); font-size: clamp(30px, 3.6vw, 44px); line-height: 1.35; margin: 18px 0 14px; font-weight: 900; }
.sec-head h2 u { text-decoration-thickness: 3px; text-underline-offset: 8px; text-decoration-color: var(--coral); }
.sec-sub { font-size: 16px; color: var(--ink2); }
.sec-dark .sec-sub { color: rgba(255, 255, 255, .65); }

/* ---------- 滚动叙事 ---------- */
.showcase { padding: 112px 0 72px; }
.sc-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 72px; align-items: start; }
.sc-sticky { position: sticky; top: 100px; display: flex; justify-content: center; }
.sc-phone { width: 300px; height: 560px; }
.sc-cap { margin-top: 12px; text-align: center; font-size: 12px; color: var(--ink2); opacity: .55; letter-spacing: 2px; }
.mock {
  position: absolute; top: 40px; left: 16px; right: 16px; bottom: 16px;
  border-radius: 32px; overflow: hidden;
  opacity: 0; transform: translateY(16px) scale(.985);
  transition: opacity .45s ease, transform .45s ease;
}
.sc-phone[data-step="1"] .mock-a,
.sc-phone[data-step="2"] .mock-b,
.sc-phone[data-step="3"] .mock-c { opacity: 1; transform: none; }

.phone {
  position: relative; border-radius: 44px; padding: 14px;
  background: linear-gradient(#1E241F, #101510);
  box-shadow: 0 60px 120px -40px rgba(0, 0, 0, .55), inset 0 0 0 2px rgba(255, 255, 255, .08);
}
.phone-notch { width: 110px; height: 8px; border-radius: 4px; margin: 4px auto 12px; position: relative; z-index: 3; background: rgba(255,255,255,.16); }

.m-scr { height: 100%; padding: 20px 18px; background: var(--cream); display: flex; flex-direction: column; }
.m-tag { display: inline-flex; align-self: flex-start; font-size: 11px; font-weight: 800; letter-spacing: 1px; color: #fff; background: var(--brand); border-radius: 999px; padding: 5px 12px; }
.m-tag.soft { background: var(--brand-soft); color: var(--brand); }

/* mock-a: AI 报告 */
.mock-a .m-name { font-size: 18px; font-weight: 900; margin-top: 14px; color: var(--ink); }
.mock-a .m-name i { font-style: normal; font-size: 9.5px; font-weight: 800; color: #1B1500; background: var(--gold); border-radius: 6px; padding: 2px 7px; margin-left: 6px; vertical-align: 2px; }
.m-score { font-size: 52px; font-weight: 900; line-height: 1.15; font-family: "DIN Alternate", "Avenir Next", sans-serif; color: var(--brand); }
.m-score small { display: inline-block; margin-left: 3px; color: var(--ink2); font-family: var(--sans); font-size: 12px; font-weight: 800; vertical-align: 11px; }
.m-dim { display: flex; align-items: center; gap: 10px; font-size: 11.5px; margin-top: 9px; color: var(--ink2); font-weight: 700; }
.m-dim span { width: 30px; }
.m-dim b { font-size: 12px; color: var(--ink); }
.m-bar { flex: 1; height: 9px; border-radius: 5px; background: #E7E2D6; overflow: hidden; }
.m-bar i { display: block; height: 100%; width: 58%; border-radius: 5px; background: linear-gradient(90deg, var(--brand), #2A9A7E); }
.m-bar.mb-2 i { width: 24%; background: linear-gradient(90deg, #2A9A7E, #7AC8B0); }
.m-bar.mb-3 i { width: 18%; background: linear-gradient(90deg, var(--gold-deep), var(--gold)); }
.m-note { margin-top: auto; font-size: 10.5px; color: var(--ink2); opacity: .8; border-top: 1px dashed var(--line); padding-top: 10px; line-height: 1.6; }

/* mock-b: 领养列表 */
.m-row { display: flex; align-items: center; gap: 11px; background: var(--sf); border: 1px solid var(--line); border-radius: 16px; padding: 11px 13px; margin-top: 10px; }
.m-row u { width: 38px; height: 38px; border-radius: 11px; flex: none; }
.m-row u.ra { background: linear-gradient(135deg, var(--brand), #0A4536); }
.m-row u.rb { background: linear-gradient(135deg, var(--coral), #C94B36); }
.m-row u.rc { background: linear-gradient(135deg, var(--gold), #E0A126); }
.m-rc { flex: 1; min-width: 0; }
.m-rc b { display: block; font-size: 13.5px; color: var(--ink); }
.m-rc s { text-decoration: none; display: block; font-size: 10.5px; color: var(--ink2); margin-top: 1px; }
.m-row em { font-style: normal; font-size: 10.5px; font-weight: 800; color: var(--coral); }

/* mock-c: 社区问答 */
.m-qa { font-size: 16px; font-weight: 900; line-height: 1.5; color: var(--ink); margin-top: 14px; }
.m-pills { display: flex; gap: 8px; margin-top: 10px; }
.m-pills i { font-style: normal; font-size: 10.5px; font-weight: 800; color: var(--brand); background: var(--brand-soft); border-radius: 999px; padding: 4px 10px; }
.m-ency { background: var(--sf); border: 1px solid var(--line); border-radius: 16px; padding: 13px 14px; margin-top: 12px; }
.m-ency b { display: block; font-size: 13px; color: var(--ink); }
.m-ency s { text-decoration: none; display: block; font-size: 10.5px; color: var(--ink2); margin-top: 3px; }

/* 步骤文本 */
.sc-steps { padding: 8vh 0 12vh; }
.step-block {
  min-height: 62vh; display: flex; flex-direction: column; justify-content: center;
  padding: 40px 0 40px 36px; border-left: 3px solid var(--line);
  transition: border-color .3s;
}
.step-block.on { border-left-color: var(--brand); }
.sb-no { font-family: var(--serif); font-size: 30px; font-weight: 900; color: var(--line); transition: color .3s; }
.step-block.on .sb-no { color: var(--coral); }
.step-block h3 { font-size: 26px; font-weight: 900; margin: 12px 0 14px; }
.step-block > p { font-size: 15px; color: var(--ink2); max-width: 520px; }
.sb-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.sb-tags span { font-size: 12.5px; font-weight: 800; color: var(--brand); background: var(--brand-soft); border-radius: 999px; padding: 6px 14px; }
.sb-note { margin-top: 16px; font-size: 12.5px; color: var(--ink2); opacity: .75; }

/* ---------- CFA 流程 ---------- */
.steps { display: grid; grid-template-columns: 1fr 26px 1fr 26px 1fr 26px 1fr; align-items: stretch; }
.step { background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .12); border-radius: 20px; padding: 30px 24px; }
.step-no { font-family: var(--serif); font-size: 32px; font-weight: 900; color: var(--gold); letter-spacing: 1px; }
.step h4 { font-size: 16.5px; font-weight: 900; margin: 12px 0 8px; }
.step p { font-size: 13px; color: rgba(255, 255, 255, .62); }
.step-arr { align-self: center; height: 1.5px; background: rgba(255, 255, 255, .22); position: relative; }
.step-arr::after { content: ""; position: absolute; right: 0; top: -4px; border: 5px solid transparent; border-left-color: rgba(255, 255, 255, .22); }
.cfa-note {
  margin-top: 48px; border-radius: 20px; padding: 24px 30px;
  background: rgba(229, 197, 125, .1); border: 1px solid rgba(229, 197, 125, .25);
  font-size: 14px; color: rgba(255, 255, 255, .72); line-height: 1.9;
}
.cfa-note b { color: var(--gold); }

/* ---------- 理念 ---------- */
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
.prin { border-top: 3px solid var(--brand); padding-top: 26px; }
.prin:nth-child(2) { border-top-color: var(--gold); }
.prin:nth-child(3) { border-top-color: var(--coral); }
.prin-k { font-size: 19px; font-weight: 900; margin-bottom: 12px; }
.prin p { font-size: 14.5px; color: var(--ink2); }

/* ---------- 关于 / 联系 ---------- */
.about { display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px; align-items: start; }
.about-copy h2 { font-family: var(--serif); font-size: clamp(28px, 3vw, 40px); line-height: 1.4; margin: 18px 0 20px; font-weight: 900; }
.about-copy p { font-size: 15px; color: var(--ink2); margin-bottom: 14px; }
.contact-card {
  background: var(--brand-deep); color: #fff; border-radius: 26px; padding: 40px 36px;
  box-shadow: 0 40px 90px -40px rgba(9, 50, 39, .6);
}
.cc-title { font-size: 20px; font-weight: 900; margin-bottom: 18px; }
.cc-mail { font-size: 19px; font-weight: 800; color: var(--gold); letter-spacing: .5px; }
.cc-line { font-size: 14px; color: rgba(255, 255, 255, .62); margin-top: 12px; }
.contact-card .btn { margin-top: 26px; }
.btn.block { display: flex; width: 100%; }

/* ---------- 页脚 ---------- */
.foot { border-top: 1px solid var(--line); padding: 44px 0 40px; background: #EDEAE0; }
.foot-in { display: flex; align-items: center; gap: 40px; flex-wrap: wrap; }
.foot-brand { display: flex; align-items: center; gap: 14px; }
.foot-brand img { width: 44px; height: 44px; border-radius: 12px; }
.foot-brand b { display: block; font-size: 16px; }
.foot-brand span { font-size: 12px; color: var(--ink2); }
.foot-links { display: flex; gap: 26px; margin-left: auto; }
.foot-links a { font-size: 13.5px; font-weight: 600; color: var(--ink2); }
.foot-links a:hover { color: var(--brand); }
.foot-legal { width: 100%; display: flex; gap: 24px; font-size: 12.5px; color: var(--ink2); border-top: 1px solid var(--line); padding-top: 22px; }
.foot-legal .beian { color: inherit; opacity: .75; }
.foot-legal .beian:hover { color: var(--brand); opacity: 1; }

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 920px) {
  .hero { height: 700px; min-height: 700px; }
  .nav { gap: 16px; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-burger { display: block; margin-left: auto; }
  .nav.open .nav-links {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 76px; left: 0; right: 0;
    background: var(--cream); padding: 12px 32px 24px;
    box-shadow: 0 24px 40px -24px rgba(0, 0, 0, .25);
  }
  .nav.open .nav-links a { padding: 16px 0; border-bottom: 1px solid var(--line); color: var(--ink); }

  .hero-shell { display: flex; min-height: 100%; padding: 110px 24px 84px; align-items: flex-start; justify-content: center; flex-direction: column; gap: 20px; }
  .hero-copy { width: 100%; max-width: 570px; }
  .hero-kicker { gap: 9px; font-size: 9.5px; letter-spacing: 1.55px; white-space: nowrap; }
  .hero-kicker i { width: 18px; }
  .hero-copy h1 { margin-top: 15px; font-size: clamp(36px, 9vw, 50px); line-height: 1.2; }
  .hero-copy-app h1 { font-size: clamp(34px, 8.6vw, 42px); }
  .hero-copy-cfa h1 { font-size: clamp(33px, 8.5vw, 38px); }
  .hero-copy p { margin-top: 15px; max-width: 530px; font-size: 14px; line-height: 1.82; }
  .hero-actions { width: 100%; margin-top: 23px; gap: 10px; flex-wrap: nowrap; }
  .hero-actions .btn { flex: 1; min-width: 0; height: 50px; padding: 0 10px; border-radius: 12px; font-size: 13px; white-space: nowrap; }
  .hero-proof { gap: 7px 12px; margin-top: 18px; font-size: 10.5px; }
  .hero-proof span { gap: 6px; }
  .hero-proof span::before { width: 4px; height: 4px; box-shadow: 0 0 0 3px rgba(229,197,125,.08); }
  .brand-mark-stage { display: none; }
  .cat-img { object-position: 63% center; }
  .app-tone { background: linear-gradient(90deg, rgba(3,28,22,.99) 0%, rgba(5,45,34,.94) 54%, rgba(6,48,37,.45) 100%), linear-gradient(180deg, rgba(5,38,29,.1), rgba(5,38,29,.42)); }
  .app-tone::before, .app-side-note { display: none; }
  .slide-cfa .hero-shell { justify-content: flex-start; padding-top: 100px; }
  .slide-cfa .hero-kicker { white-space: normal; }
  .slide-cfa .hero-kicker span:first-child { font-size: 8.5px; letter-spacing: 1.25px; }
  .slide-cfa .hero-kicker span:last-child { display: none; }
  .slide-cfa .hero-copy p { line-height: 1.7; }
  .cfa-facts { align-self: stretch; grid-template-columns: 1fr 1fr; width: 100%; border-radius: 18px; }
  .cfa-facts div { min-height: 76px; padding: 12px 14px; }
  .cfa-facts dt { font-size: 9px; letter-spacing: 1.6px; }
  .cfa-facts dd { margin-top: 5px; font-size: 12px; line-height: 1.4; }
  .hero-controls { bottom: 18px; width: calc(100% - 48px); gap: 12px; }
  .hero-count { min-width: 62px; font-size: 10px; }
  .hero-count b { font-size: 14px; }
  .hero-count i { width: 16px; }
  .dot { width: 32px; height: 44px; }
  .hero-arrows, .hero-scroll { display: none; }
  .slide-credit { display: none; }

  .sc-grid { grid-template-columns: 1fr; gap: 24px; }
  .sc-sticky { top: 84px; z-index: 5; }
  .sc-phone { width: 240px; height: 440px; }
  .step-block { min-height: 0; padding: 34px 0 34px 24px; }
  .sc-steps { padding: 10vh 0 6vh; }

  .steps { grid-template-columns: 1fr; gap: 14px; }
  .step-arr { display: none; }
  .principles, .about { grid-template-columns: 1fr; }
  .sec { padding: 80px 0; }
  .foot-links { margin-left: 0; }
}

@media (max-width: 390px) {
  .hero { height: 680px; min-height: 680px; }
  .hero-shell { padding-top: 94px; }
  .hero-copy h1 { font-size: 34px; }
  .hero-copy p { font-size: 13px; }
  .hero-proof { font-size: 10px; }
  .slide-cfa .hero-shell { padding-top: 86px; gap: 15px; }
  .slide-cfa .hero-copy h1 { font-size: 33px; }
  .slide-cfa .hero-copy p { font-size: 12.5px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-scroll i, .brand-mark-ring, .slide-app.is-on .cat-img { animation: none; }
  .reveal { transition: none; opacity: 1; transform: none; }
  .mock { transition: opacity .01s; }
  .slide { transition-duration: .01s; }
}