/* =========================================================
   思维灵动科技 · 官网样式 v2
   结构：变量与主题 → 基础 → 全站组件（头部/菜单/光标/转场）
        → 通用区块 → 各页面区块 → 页脚 → 响应式
   ========================================================= */

@font-face {
  font-family: "Unbounded";
  src: url("../fonts/unbounded-latin.22f9b928aa.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "LD Serif";
  src: url("../fonts/serif-sc.28ecd88706.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

/* 主题色注册为可过渡的颜色变量：切换 data-theme 时全站颜色平滑渐变 */
@property --bg   { syntax: "<color>"; inherits: true; initial-value: #10121a; }
@property --fg   { syntax: "<color>"; inherits: true; initial-value: #f4efe6; }
@property --mut  { syntax: "<color>"; inherits: true; initial-value: #a2a5b3; }
@property --line { syntax: "<color>"; inherits: true; initial-value: rgba(244, 239, 230, 0.16); }
@property --card { syntax: "<color>"; inherits: true; initial-value: #1a1d29; }

:root {
  --night: #10121a;
  --cream: #f5efe4;
  --ink: #1c1a17;
  --coral: #ff6b4a;
  --coral-d: #e5533a;
  --sun: #ffc94d;
  --mint: #6fd6b8;
  --sky: #7fb2ff;

  --f-disp: "Unbounded", "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-serif: "LD Serif", "Songti SC", "STSong", "SimSun", serif;
  --f-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;

  --gut: clamp(20px, 4vw, 56px);
  --hd: 76px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}
html, html[data-theme="dark"] { --bg: #10121a; --fg: #f4efe6; --mut: #a2a5b3; --line: rgba(244, 239, 230, 0.16); --card: #1a1d29; }
html[data-theme="light"] { --bg: #f5efe4; --fg: #1c1a17; --mut: #6b6558; --line: rgba(28, 26, 23, 0.16); --card: #fffaf0; }
html[data-theme="sun"]   { --bg: #ffd166; --fg: #1c1a17; --mut: #5f4b16; --line: rgba(28, 26, 23, 0.2);  --card: #ffe19a; }

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  transition: --bg 0.7s ease, --fg 0.7s ease, --mut 0.7s ease, --line 0.7s ease, --card 0.7s ease;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.75 var(--f-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
h1, h2, h3, p, ul, ol, figure { margin: 0; padding: 0; }
h1, h2, h3 { text-wrap: balance; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
img, svg, canvas { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--coral); outline-offset: 4px; border-radius: 4px; }
::selection { background: var(--coral); color: var(--ink); }

.wrap { width: min(1320px, 100% - 2 * var(--gut)); margin-inline: auto; }
.sec { position: relative; padding: clamp(96px, 16vh, 180px) 0; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.serif { font-family: var(--f-serif); font-weight: 600; line-height: 1.3; letter-spacing: 0.01em; }
.t-xl { font-size: clamp(34px, 5.4vw, 88px); }
.t-lg { font-size: clamp(28px, 3.8vw, 58px); }
.t-md { font-size: clamp(22px, 2.2vw, 32px); }
.lead { font-size: clamp(16px, 1.25vw, 19px); color: var(--mut); max-width: 34em; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 12px/1 var(--f-disp); letter-spacing: 0.14em; text-transform: uppercase; color: var(--coral);
}
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
html[data-theme="sun"] .eyebrow { color: var(--ink); }

/* 逐字浮现 */
.wd { display: inline-block; white-space: nowrap; }
.js [data-split] .ch {
  display: inline-block; opacity: 0; filter: blur(10px); transform: translateY(0.35em);
  transition: opacity 0.7s var(--ease), filter 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: calc(var(--i) * 32ms);
}
.js [data-split].is-in .ch,
.js .is-on > [data-split] .ch { opacity: 1; filter: none; transform: none; }

/* 进入视口时上浮 */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); transition-delay: calc(var(--d, 0) * 90ms); }
.js .reveal.is-in { opacity: 1; transform: none; }

.is-motion-paused, .is-motion-paused *, .is-motion-paused::after, .is-motion-paused *::after,
.stage__hint.is-off .ms * { animation-play-state: paused !important; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; gap: 16px;
  padding: 10px 10px 10px 28px; border-radius: 999px;
  background: var(--coral); color: var(--ink); font-weight: 600; font-size: 16px;
  transition: background 0.3s, transform 0.3s var(--ease);
}
.btn i {
  width: 44px; height: 44px; border-radius: 50%; background: var(--ink); color: #fff;
  display: grid; place-items: center; font-style: normal; font-size: 18px;
  transition: transform 0.45s var(--ease);
}
.btn:hover { background: var(--sun); }
.btn:hover i { transform: rotate(-45deg); }
.btn--line { background: transparent; border: 1px solid var(--line); color: var(--fg); }
.btn--line i { background: var(--fg); color: var(--bg); }
.btn--line:hover { background: transparent; border-color: var(--fg); }
.more { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; border-bottom: 1px solid var(--line); padding-bottom: 6px; transition: gap 0.3s, border-color 0.3s; }
.more:hover { gap: 18px; border-color: var(--coral); }
.tag { display: inline-block; padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px; font-size: 13px; color: var(--mut); }

/* 文字上下翻转（导航悬停时中文换成英文） */
.roll { display: inline-grid; overflow: hidden; line-height: 1.5; vertical-align: top; }
.roll > span { grid-area: 1 / 1; transition: transform 0.5s var(--ease); white-space: nowrap; }
.roll > span + span { transform: translateY(110%); font-family: var(--f-disp); font-size: 0.82em; align-self: center; }
a:hover .roll > span:first-child, button:hover .roll > span:first-child { transform: translateY(-110%); }
a:hover .roll > span + span, button:hover .roll > span + span { transform: none; }

/* ---------- 吉祥物「小灵」 ---------- */
.ms { width: 100%; height: auto; overflow: visible; --ms-b: #ff6b4a; --ms-d: #e5533a; --ms-l: #ffb39f; }
.ms--mint { --ms-b: #6fd6b8; --ms-d: #4fbf9f; --ms-l: #c4f1e3; }
.ms-body { fill: var(--ms-b); }
.ms-limb { fill: var(--ms-d); }
.ms-belly { fill: var(--ms-l); opacity: 0.5; }
.ms-blush { fill: var(--ms-l); opacity: 0.85; }
.ms-ant { fill: none; stroke: var(--ms-d); stroke-width: 5; stroke-linecap: round; }
.ms-spark { fill: var(--sun); }
.ms--mint .ms-spark { fill: var(--coral); }
.ms-eye, .ms-shadow { fill: #1c1a17; }
.ms-shadow { opacity: 0.18; }
.ms-smile, .ms-happy { fill: none; stroke: #1c1a17; stroke-width: 4; stroke-linecap: round; }
.ms-happy { display: none; }
.ms-all { animation: ms-float 3.6s ease-in-out infinite; }
.ms-shadow { animation: ms-shadow 3.6s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.ms-eyes { transform: translate(calc(var(--ex, 0) * 1px), calc(var(--ey, 0) * 1px)); transition: transform 0.25s ease-out; }
.ms-eye { transform-box: fill-box; transform-origin: center; animation: ms-blink 5.2s infinite; }
.ms-arm, .ms-antg { transform-box: fill-box; transition: transform 0.5s var(--ease); }
.ms-arm--l { transform-origin: 80% 10%; }
.ms-arm--r { transform-origin: 20% 10%; }
.ms-antg { transform-origin: 0% 100%; animation: ms-ant 2.8s ease-in-out infinite; }
.ms-spark { transform-box: fill-box; transform-origin: center; animation: ms-spark 2.2s ease-in-out infinite; }
/* 姿势 */
.ms[data-pose="wave"] .ms-arm--r { animation: ms-wave 0.9s ease-in-out infinite; }
.ms[data-pose="think"] .ms-arm--l { transform: rotate(118deg) translate(-4px, -8px); }
.ms[data-pose="think"] .ms-eyes { transform: translate(4px, -5px); }
.ms[data-pose="think"] .ms-spark { animation-duration: 0.7s; }
.ms[data-pose="work"] .ms-arm--l { animation: ms-type 0.36s ease-in-out infinite; }
.ms[data-pose="work"] .ms-arm--r { animation: ms-type-r 0.36s ease-in-out 0.18s infinite; }
.ms[data-pose="hi-r"] .ms-arm--r { transform: rotate(-150deg); }
.ms[data-pose="hi-r"] .ms-eyes { transform: translate(5px, 0); }
.ms[data-pose="hi-l"] .ms-arm--l { transform: rotate(150deg); }
.ms[data-pose="hi-l"] .ms-eyes { transform: translate(-5px, 0); }
.ms[data-pose="work"] .ms-eyes { transform: translate(0, 5px); }
.ms[data-pose="point"] .ms-arm--r { transform: rotate(-100deg); }
.ms[data-pose="point"] .ms-eyes { transform: translate(5px, 0); }
.ms[data-pose="cheer"] .ms-arm--l { transform: rotate(140deg); }
.ms[data-pose="cheer"] .ms-arm--r { transform: rotate(-140deg); }
.ms[data-pose="cheer"] .ms-eyes, .ms[data-pose="cheer"] .ms-smile { display: none; }
.ms[data-pose="cheer"] .ms-happy { display: block; }
.ms[data-pose="cheer"] .ms-all { animation: ms-jump 0.7s var(--ease) infinite alternate; }
.ms[data-pose="guard"] .ms-arm--l { transform: rotate(60deg); }
.ms[data-pose="guard"] .ms-arm--r { transform: rotate(-60deg); }
@keyframes ms-float { 50% { transform: translateY(-7px); } }
@keyframes ms-shadow { 50% { transform: scaleX(0.86); } }
@keyframes ms-blink { 0%, 93%, 100% { transform: scaleY(1); } 96% { transform: scaleY(0.1); } }
@keyframes ms-ant { 50% { transform: rotate(9deg); } }
@keyframes ms-spark { 50% { transform: scale(1.28); } }
@keyframes ms-wave { 0%, 100% { transform: rotate(-120deg); } 50% { transform: rotate(-155deg); } }
@keyframes ms-type { 0%, 100% { transform: rotate(40deg) translateY(0); } 50% { transform: rotate(40deg) translateY(-7px); } }
@keyframes ms-type-r { 0%, 100% { transform: rotate(-40deg) translateY(0); } 50% { transform: rotate(-40deg) translateY(-7px); } }
@keyframes ms-jump { from { transform: translateY(0); } to { transform: translateY(-16px); } }

/* ---------- 头部 ---------- */
.hd {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--hd);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 0 var(--gut); color: var(--fg);
  transition: transform 0.55s var(--ease), background-color 0.4s;
}
.hd::after { content: ""; position: absolute; left: var(--gut); right: var(--gut); bottom: 0; height: 1px; background: var(--line); }
.hd.is-solid { background: var(--bg); background: color-mix(in srgb, var(--bg) 82%, transparent); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.hd.is-hidden { transform: translateY(-105%); }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 700; font-size: 19px; letter-spacing: 0.06em; }
.brand svg { width: 34px; height: 34px; flex: none; transition: transform 0.5s var(--ease); }
.brand:hover svg { transform: rotate(-12deg) scale(1.08); }
.nav { display: flex; gap: clamp(20px, 3.4vw, 54px); margin-left: auto; }
.nav__a { position: relative; font-size: 15px; padding: 8px 0; }
.nav__a.is-cur::before { content: ""; position: absolute; left: 50%; top: -4px; width: 6px; height: 6px; margin-left: -3px; border-radius: 50%; background: var(--coral); }
.hd__r { display: flex; align-items: center; gap: 14px; }
.pill { display: inline-flex; align-items: center; gap: 10px; height: 42px; padding: 0 22px; border-radius: 999px; background: var(--coral); color: var(--ink); font-weight: 600; font-size: 14px; transition: background 0.3s; }
.pill:hover { background: var(--sun); }
.pill > i { width: 6px; height: 6px; border-radius: 50%; background: var(--ink); }
.burger { display: none; width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--line); position: relative; }
.burger i { position: absolute; left: 12px; right: 12px; height: 2px; background: var(--fg); border-radius: 2px; transition: transform 0.4s var(--ease), top 0.4s var(--ease); }
.burger i:first-child { top: 16px; }
.burger i:last-child { top: 23px; }
.menu-open .burger i:first-child { top: 20px; transform: rotate(45deg); }
.menu-open .burger i:last-child { top: 20px; transform: rotate(-45deg); }

/* 全屏菜单（移动端） */
.menu {
  position: fixed; inset: 0; z-index: 45; background: var(--night); color: #f4efe6;
  padding: calc(var(--hd) + 28px) var(--gut) 32px; display: flex; flex-direction: column;
  clip-path: circle(0px at calc(100% - 44px) 38px); visibility: hidden;
  transition: clip-path 0.7s var(--ease), visibility 0s 0.7s;
  overflow-y: auto; overscroll-behavior: contain;
  scroll-padding-top: calc(var(--hd) + 12px);
  padding-bottom: max(32px, env(safe-area-inset-bottom, 0px));
}
.menu__a, .menu__ft { flex-shrink: 0; }
.menu-open .menu { clip-path: circle(160% at calc(100% - 44px) 38px); visibility: visible; transition: clip-path 0.7s var(--ease); }
.menu-open .hd { color: #f4efe6; --line: rgba(244, 239, 230, 0.16); --fg: #f4efe6; background: none; transform: none; -webkit-backdrop-filter: none; backdrop-filter: none; }
.menu__a { display: flex; align-items: baseline; gap: 16px; padding: 14px 0; border-bottom: 1px solid rgba(244, 239, 230, 0.12); opacity: 0; transform: translateY(20px); transition: opacity 0.5s, transform 0.5s var(--ease); }
.menu-open .menu__a { opacity: 1; transform: none; transition-delay: calc(0.15s + var(--i) * 0.05s); }
.menu__a small { font: 500 11px var(--f-disp); color: var(--coral); width: 26px; }
.menu__a b { font: 600 30px/1.3 var(--f-serif); }
.menu__a em { font: 400 12px var(--f-disp); font-style: normal; color: #a2a5b3; margin-left: auto; }
.menu__ft { margin-top: auto; padding-top: 24px; display: flex; justify-content: space-between; align-items: flex-end; font-size: 14px; color: #a2a5b3; }
.menu__ft a { display: block; color: #f4efe6; }
.menu__ms { width: 86px; }

/* 底部信息条：滚动进度 */
.hud {
  position: fixed; left: var(--gut); right: var(--gut); bottom: 18px; z-index: 40;
  display: flex; justify-content: space-between; align-items: center;
  font: 400 11px/1 var(--f-disp); color: var(--fg); pointer-events: none;
  transition: opacity 0.4s;
}
.hud.is-off { opacity: 0; }
.hud__c a { margin-left: 16px; pointer-events: auto; font-family: var(--f-body); transition: color 0.3s; }
.hud__c a:hover { color: var(--coral); }
.hud.is-off .hud__c a { pointer-events: none; }
.hud__p { display: flex; align-items: center; gap: 12px; }
.hud__bar { width: 110px; height: 2px; background: var(--line); border-radius: 2px; overflow: hidden; }
.hud__bar i { display: block; height: 100%; background: var(--coral); transform-origin: 0 50%; transform: scaleX(var(--sp, 0)); }
.hud__n { width: 3.2em; text-align: right; font-variant-numeric: tabular-nums; }

/* 自定义光标（仅鼠标设备） */
.cur, .cur-ring { position: fixed; left: 0; top: 0; z-index: 300; pointer-events: none; border-radius: 50%; opacity: 0; }
.cur { width: 8px; height: 8px; margin: -4px 0 0 -4px; background: var(--coral); }
.cur-ring {
  width: 44px; height: 44px; margin: -22px 0 0 -22px; border: 1px solid var(--coral);
  display: grid; place-items: center; font: 600 13px var(--f-body); color: var(--ink);
  transition: width 0.35s var(--ease), height 0.35s var(--ease), margin 0.35s var(--ease), background-color 0.3s, opacity 0.3s;
}
.cur-on .cur, .cur-on .cur-ring { opacity: 1; }
.cur-ring.is-link { width: 64px; height: 64px; margin: -32px 0 0 -32px; background: rgba(255, 107, 74, 0.18); }
.cur-ring.is-label { width: 92px; height: 92px; margin: -46px 0 0 -46px; background: var(--coral); border-color: var(--coral); }
.cur-ring span { opacity: 0; transition: opacity 0.2s; }
.cur-ring.is-label span { opacity: 1; }

/* 页面转场与开场 */
.wipe { position: fixed; inset: 0; z-index: 400; background: var(--coral); pointer-events: none; clip-path: circle(0px at var(--wx, 50%) var(--wy, 50%)); }
.is-leaving .wipe { clip-path: circle(150% at var(--wx, 50%) var(--wy, 50%)); transition: clip-path 0.55s cubic-bezier(0.65, 0, 0.35, 1); }
html.nav-in::before, html.intro::before {
  content: ""; position: fixed; inset: 0; z-index: 390; background: var(--coral);
  clip-path: circle(150% at 50% 50%); transition: clip-path 0.8s cubic-bezier(0.65, 0, 0.35, 1);
  animation: cover-failsafe 0s 6s forwards;
}
html.intro::before { background: var(--night); }
html.nav-in.cover-off::before, html.intro.cover-off::before { clip-path: circle(0px at 50% 50%); }
@keyframes cover-failsafe { to { visibility: hidden; } }
.intro-box { position: fixed; inset: 0; z-index: 395; display: grid; place-items: center; color: #f4efe6; transition: opacity 0.4s, transform 0.6s var(--ease); }
.intro-box.is-out { opacity: 0; transform: scale(1.25); pointer-events: none; }
.intro-box__in { display: grid; justify-items: center; gap: 18px; }
.intro-box .ms { width: 132px; }
.intro-box__ring { position: relative; width: 190px; height: 190px; display: grid; place-items: center; }
.intro-box__ring svg.ring { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.intro-box__ring .ring circle { fill: none; stroke-width: 0.5; }
.intro-box__ring .r-bg { stroke: rgba(244, 239, 230, 0.14); }
.intro-box__ring .r-fg { stroke: var(--coral); stroke-linecap: round; stroke-dasharray: 100; stroke-dashoffset: calc(100 - var(--lp, 0)); transition: stroke-dashoffset 0.2s linear; }
.intro-box__n { font: 400 12px var(--f-disp); letter-spacing: 0.14em; color: #a2a5b3; }

/* ---------- 首页：滚动分幕 ---------- */
.stage { position: relative; height: 620vh; }
.stage__pin { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; }
.stage__glow {
  position: absolute; inset: -20%;
  background:
    radial-gradient(38% 40% at 28% 36%, rgba(255, 107, 74, 0.2), transparent 70%),
    radial-gradient(34% 40% at 74% 62%, rgba(127, 178, 255, 0.16), transparent 70%),
    radial-gradient(30% 30% at 60% 20%, rgba(111, 214, 184, 0.1), transparent 70%);
  animation: glow-drift 16s ease-in-out infinite alternate;
}
@keyframes glow-drift { to { transform: translate(4%, -3%) rotate(8deg) scale(1.08); } }
#stageCv { position: absolute; inset: 0; width: 100%; height: 100%; }
.stage__s {
  position: absolute; z-index: 2; opacity: 0; visibility: hidden; pointer-events: none; color: #f4efe6;
  transition: opacity 0.45s, visibility 0s 0.45s;
}
.stage__s.is-on { opacity: 1; visibility: visible; pointer-events: auto; transition: opacity 0.45s; }
.stage__s--0 { left: 0; right: 0; bottom: 15vh; text-align: center; padding: 0 var(--gut); }
.stage__s--0 h1 { font-size: clamp(30px, 4.4vw, 68px); }
.stage__s--0 p { margin-top: 14px; color: #a2a5b3; font-size: clamp(15px, 1.2vw, 18px); }
.stage__s--1, .stage__s--3 { right: var(--gut); top: 50%; transform: translateY(-50%); width: min(38vw, 470px); }
.stage__s--2 { left: var(--gut); top: 50%; transform: translateY(-50%); width: min(38vw, 470px); }
.chap__no { font: 500 13px var(--f-disp); color: var(--coral); letter-spacing: 0.14em; }
.chap__t { font-size: clamp(40px, 5.6vw, 92px); line-height: 1.15; margin: 10px 0 4px; }
.chap__en { font: 400 clamp(14px, 1.3vw, 20px) var(--f-disp); color: var(--sun); }
.chap__d { margin: 22px 0 20px; color: #c9c6bd; font-size: clamp(15px, 1.15vw, 17px); }
.stage__s .tag { border-color: rgba(244, 239, 230, 0.22); color: #c9c6bd; }
.stage__hint {
  position: absolute; left: 50%; bottom: 4.5vh; z-index: 2; transform: translateX(-50%);
  display: grid; justify-items: center; gap: 4px; color: #a2a5b3; font-size: 12px; letter-spacing: 0.2em;
  transition: opacity 0.4s;
}
.stage__hint .ms { width: 54px; }
.stage__hint.is-off { opacity: 0; }

/* 没有脚本时：分幕改为普通的上下排列 */
html:not(.js) .stage { height: auto; }
html:not(.js) .stage__pin { position: relative; height: auto; padding: 80px var(--gut) 60px; display: grid; gap: 60px; }
html:not(.js) .stage__s { position: static; opacity: 1; visibility: visible; transform: none; width: auto; text-align: left; }
html:not(.js) #stageCv, html:not(.js) .stage__hint { display: none; }

/* ---------- 通用：大段陈述（随滚动逐字点亮） ---------- */
.say { padding-top: clamp(80px, 14vh, 160px); }
.say__t { font-size: clamp(28px, 4.2vw, 68px); line-height: 1.38; max-width: 18em; }
.js [data-lit] .ch { display: inline; opacity: 0.14; filter: none; transform: none; transition: opacity 0.35s; }
.js [data-lit] .ch.on { opacity: 1; }

/* 首页：关于 + 数字 */
.intro-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: clamp(32px, 6vw, 110px); align-items: start; }
.intro-grid p + p { margin-top: 1.1em; }
.intro-grid .more { margin-top: 34px; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: clamp(56px, 9vh, 110px); border-top: 1px solid var(--line); }
.stat { padding: 34px 28px 0 0; }
.stat + .stat { padding-left: 28px; border-left: 1px solid var(--line); }
.stat b { display: block; font: 600 clamp(28px, 3.2vw, 48px)/1.3 var(--f-serif); letter-spacing: 0.01em; }
.stat b small { font: 600 max(0.2em, 15px) var(--f-body); letter-spacing: 0; margin-left: 8px; color: var(--mut); }
.stat > span { display: block; margin-top: 14px; color: var(--mut); }

/* 优势：悬停/点击展开的行 */
.adv__hd { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: clamp(36px, 6vh, 72px); }
.acc__i { border-top: 1px solid var(--line); }
.acc__i:last-child { border-bottom: 1px solid var(--line); }
.acc__h { width: 100%; display: grid; grid-template-columns: 90px 1fr 44px; align-items: center; gap: 16px; padding: 30px 0; text-align: left; }
.acc__no { font: 500 13px var(--f-disp); color: var(--mut); transition: color 0.3s; }
.acc__t { font: 600 clamp(22px, 2.6vw, 40px)/1.3 var(--f-serif); transition: transform 0.5s var(--ease), color 0.3s; }
.acc__x { width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line); position: relative; transition: background 0.3s, border-color 0.3s, transform 0.5s var(--ease); }
.acc__x::before, .acc__x::after { content: ""; position: absolute; left: 50%; top: 50%; width: 14px; height: 2px; margin: -1px 0 0 -7px; background: var(--fg); transition: transform 0.4s var(--ease), background 0.3s; }
.acc__x::after { transform: rotate(90deg); }
.acc__p { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.6s var(--ease); }
.acc__p > div { overflow: hidden; }
.acc__p p { padding: 0 60px 34px 106px; max-width: 46em; color: var(--mut); }
.acc__p p + p { margin-top: -18px; }
.acc__i.is-open .acc__p { grid-template-rows: 1fr; }
.acc__i.is-open .acc__no { color: var(--coral); }
.acc__i.is-open .acc__t { transform: translateX(10px); }
.acc__i.is-open .acc__x { background: var(--coral); border-color: var(--coral); transform: rotate(180deg); }
.acc__i.is-open .acc__x::before, .acc__i.is-open .acc__x::after { background: var(--ink); }
.acc__i.is-open .acc__x::after { transform: rotate(0deg); }

/* ---------- 通用：结尾邀约（两个角色击掌） ---------- */
.cta { position: relative; min-height: 100vh; min-height: 100svh; display: grid; place-items: center; text-align: center; overflow: hidden; padding: 20vh var(--gut) 18vh; }
.cta__bg {
  position: absolute; left: 50%; top: 13%; transform: translateX(-50%) scale(calc(0.86 + var(--t, 0) * 0.14));
  font: 700 clamp(60px, 15vw, 250px)/1 var(--f-disp); white-space: nowrap; letter-spacing: -0.03em;
  color: transparent; -webkit-text-stroke: 1px var(--line); pointer-events: none;
}
.cta__m { position: absolute; top: 17%; width: clamp(96px, 13vw, 190px); will-change: transform; }
.cta__m--l { right: 50%; transform: translateX(calc((1 - var(--t, 0)) * -52vw + 6%)) rotate(calc((1 - var(--t, 0)) * -24deg)); }
.cta__m--r { left: 50%; transform: translateX(calc((1 - var(--t, 0)) * 52vw - 6%)) rotate(calc((1 - var(--t, 0)) * 24deg)); }
.cta__spark { position: absolute; left: 50%; top: calc(17% + clamp(20px, 3vw, 46px)); width: 0; height: 0; }
.cta__spark i { position: absolute; left: -3px; top: -22px; width: 6px; height: 18px; border-radius: 3px; background: var(--sun); transform-origin: 3px 22px; transform: rotate(calc(var(--a) * 1deg)) translateY(0) scaleY(0); opacity: 0; }
.cta.is-met .cta__spark i { animation: spark 0.7s var(--ease) forwards; }
@keyframes spark { 0% { opacity: 1; transform: rotate(calc(var(--a) * 1deg)) translateY(-6px) scaleY(0.2); } 60% { opacity: 1; transform: rotate(calc(var(--a) * 1deg)) translateY(-34px) scaleY(1); } 100% { opacity: 0; transform: rotate(calc(var(--a) * 1deg)) translateY(-52px) scaleY(0.2); } }
.cta__in { position: relative; z-index: 2; display: grid; justify-items: center; gap: 22px; margin-top: 16vh; }
.cta__in p { color: var(--mut); max-width: 30em; }
.cta__in .btn { margin-top: 12px; }

/* ---------- 子页面首屏 ---------- */
.ph { position: relative; min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; justify-content: space-between; padding: calc(var(--hd) + clamp(24px, 6vh, 70px)) 0 clamp(70px, 12vh, 130px); overflow: hidden; }
.ph__fx { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.ph > .wrap { position: relative; z-index: 2; }
.giant { font: 700 clamp(52px, 14.5vw, 236px)/0.95 var(--f-disp); letter-spacing: -0.045em; margin-left: -0.04em; color: var(--coral); white-space: nowrap; }
@media (min-width: 901px) {
  body[data-page="service"] .giant { font-size: clamp(52px, 12.6vw, 205px); }
}
.ph__row { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(28px, 6vw, 100px); align-items: end; }
.ph__zh { font-size: clamp(28px, 3.8vw, 60px); }
.ph__note { color: var(--mut); max-width: 28em; justify-self: end; }
.contact-actions { display: none; }
#wecom { scroll-margin-top: calc(var(--hd) + 20px); }
.scrolltip { display: inline-flex; align-items: center; gap: 12px; margin-top: 28px; font: 400 11px var(--f-disp); letter-spacing: 0.14em; color: var(--mut); }
.scrolltip i { width: 20px; height: 32px; border: 1px solid var(--mut); border-radius: 12px; position: relative; }
.scrolltip i::after { content: ""; position: absolute; left: 50%; top: 6px; width: 4px; height: 4px; margin-left: -2px; border-radius: 50%; background: var(--coral); animation: tip 1.8s var(--ease) infinite; }
@keyframes tip { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(12px); opacity: 0; } 100% { opacity: 0; } }

/* 服务页：首屏环绕图 */
.orbit { position: absolute; right: clamp(20px, 7vw, 120px); top: 46%; width: min(34vw, 430px); aspect-ratio: 1; transform: translateY(-50%); z-index: 1; }
.orbit__ring { position: absolute; inset: 0; border: 1px dashed var(--line); border-radius: 50%; animation: spin 40s linear infinite; }
.orbit__ring--2 { inset: 17%; animation-duration: 28s; animation-direction: reverse; }
.orbit__chip { position: absolute; left: 50%; top: 50%; margin: -19px 0 0 -52px; width: 104px; height: 38px; border-radius: 999px; display: grid; place-items: center; font-size: 13px; font-weight: 600; color: var(--ink); background: var(--c); animation: orbit 22s linear infinite; animation-delay: calc(var(--k) * -7.33s); }
.orbit .ms { position: absolute; left: 50%; top: 50%; width: 34%; transform: translate(-50%, -50%); }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes orbit { from { transform: rotate(0deg) translateX(min(17vw, 215px)) rotate(0deg); } to { transform: rotate(360deg) translateX(min(17vw, 215px)) rotate(-360deg); } }

/* 服务页：三项服务 */
.svc { display: grid; grid-template-columns: 90px 1fr 1.3fr; gap: clamp(20px, 4vw, 70px); padding: clamp(36px, 6vh, 64px) 0; border-top: 1px solid var(--line); position: relative; }
.svc:last-child { border-bottom: 1px solid var(--line); }
.svc__no { font: 500 13px var(--f-disp); color: var(--coral); padding-top: 14px; }
.svc__t { font-size: clamp(28px, 3.4vw, 54px); }
.svc__t small { display: block; font: 400 13px var(--f-disp); color: var(--mut); margin-top: 10px; letter-spacing: 0.04em; }
.svc__d p { color: var(--mut); max-width: 32em; }
.svc__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.svc__dot { position: absolute; right: 0; top: clamp(36px, 6vh, 64px); width: 14px; height: 14px; border-radius: 50%; background: var(--c, var(--coral)); transition: transform 0.6s var(--ease); }
.svc:hover .svc__dot { transform: scale(3.2); }

/* 横向滚动区（流程 / 做事方式） */
.hs { position: relative; }
.hs__pin { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; display: flex; align-items: center; }
.hs__head { position: absolute; left: var(--gut); top: calc(var(--hd) + 7vh); z-index: 3; width: min(30vw, 400px); }
.hs__head h2 { margin-top: 18px; }
.hs__head p { margin-top: 18px; color: var(--mut); font-size: 15px; }
.hs__view { width: 100%; -webkit-mask-image: linear-gradient(90deg, transparent 22vw, #000 40vw); mask-image: linear-gradient(90deg, transparent 22vw, #000 40vw); }
.hs__track { display: flex; align-items: flex-start; gap: clamp(28px, 4.5vw, 80px); width: max-content; padding: 0 var(--gut) 0 44vw; will-change: transform; }
.step { flex: none; width: clamp(270px, 28vw, 400px); opacity: 0.32; transition: opacity 0.5s; }
.step:nth-child(even) { margin-top: 15vh; }
.step.is-active { opacity: 1; }
.step__no { font: 500 12px var(--f-disp); letter-spacing: 0.14em; color: var(--coral); }
.step__t { font: 600 clamp(26px, 2.7vw, 42px)/1.3 var(--f-serif); margin: 12px 0 14px; }
.step p { color: var(--mut); font-size: 15px; }
.step__who { display: block; margin-top: 16px; font-size: 13px; color: var(--mut); opacity: 0.8; }
.hs__ms { position: absolute; left: clamp(28px, 9vw, 150px); bottom: 12vh; width: clamp(110px, 13vw, 190px); z-index: 3; }
.hs__bar { position: absolute; left: var(--gut); right: var(--gut); bottom: 7vh; height: 2px; background: var(--line); z-index: 3; }
.hs__bar i { display: block; height: 100%; background: var(--coral); transform-origin: 0 50%; transform: scaleX(var(--p, 0)); }
.vcard { flex: none; width: clamp(270px, 26vw, 380px); min-height: min(54vh, 460px); border-radius: 28px; padding: 30px; background: var(--c); color: var(--ink); display: flex; flex-direction: column; justify-content: space-between; transition: transform 0.6s var(--ease); }
.vcard:nth-child(even) { margin-top: 9vh; }
.vcard:hover { transform: translateY(-10px) rotate(-1.5deg); }
.vcard__ic { width: 76px; height: 76px; }
.vcard h3 { font: 600 clamp(26px, 2.4vw, 36px)/1.3 var(--f-serif); margin-bottom: 12px; }
.vcard p { font-size: 15px; color: rgba(28, 26, 23, 0.76); }

/* 常见问题 */
.faq { display: grid; grid-template-columns: 1fr 2fr; gap: clamp(28px, 6vw, 100px); align-items: start; }
.faq__side { position: sticky; top: calc(var(--hd) + 30px); }
.faq__side .ms { width: 120px; margin-top: 36px; }
.faq .acc__h { grid-template-columns: 1fr 44px; padding: 26px 0; }
.faq .acc__t { font-size: clamp(18px, 1.7vw, 24px); }
.faq .acc__p p { padding: 0 60px 30px 0; }

/* ---------- 案例页：圆形展开 + 卡片 ---------- */
.circ { position: relative; height: 230vh; }
.circ__pin { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; }
.circ__dark, .circ__light { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 0 var(--gut); }
.circ__dark { color: #f4efe6; }
.circ__dark h1 { font-size: clamp(32px, 5.2vw, 84px); max-width: 13em; }
.circ__dark h1 em { font-style: normal; color: var(--coral); }
.circ__light { background: var(--cream); color: var(--ink); clip-path: circle(0px at 50% 52%); }
.circ__light h2 { font-size: clamp(28px, 4vw, 60px); }
.circ__light p { margin-top: 16px; color: #6b6558; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { height: 42px; padding: 0 20px; border-radius: 999px; border: 1px solid var(--line); font-size: 14px; transition: background 0.3s, color 0.3s, border-color 0.3s; }
.chip:hover { border-color: var(--fg); }
.chip.is-on { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.cases__bar { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; margin-bottom: 40px; }
.cases__n { color: var(--mut); font-size: 14px; }
.cases { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(18px, 2vw, 30px) clamp(16px, 1.8vw, 26px); }
.case { transition: opacity 0.4s, transform 0.5s var(--ease); }
.case.is-hide { display: none; }
.case.is-pop { animation: pop 0.6s var(--ease) both; animation-delay: calc(var(--n, 0) * 50ms); }
@keyframes pop { from { opacity: 0; transform: translateY(26px) scale(0.96); } }
.case__cv { aspect-ratio: 4 / 3.3; border-radius: 22px; background: var(--c); overflow: hidden; display: grid; place-items: center; transform: perspective(900px) rotateX(calc(var(--rx, 0) * 1deg)) rotateY(calc(var(--ry, 0) * 1deg)); transition: transform 0.4s var(--ease); }
.case__cv svg { width: 74%; transition: transform 0.7s var(--ease); }
.case:hover .case__cv svg { transform: scale(1.08) rotate(-2deg); }
.case__k { display: flex; gap: 10px; align-items: center; margin-top: 18px; font-size: 13px; color: var(--mut); }
.case__k b { color: var(--coral-d); font-weight: 600; }
.case h3 { font: 600 20px/1.45 var(--f-serif); margin: 8px 0; }
.case p { font-size: 14px; color: var(--mut); }
.note { margin-top: clamp(40px, 7vh, 80px); padding: 22px 26px; border-radius: 18px; background: var(--card); color: var(--mut); font-size: 14px; display: flex; gap: 16px; align-items: center; }
.note .ms { width: 56px; flex: none; }

/* ---------- 观点页 ---------- */
.posts { border-top: 1px solid var(--line); }
.post { display: grid; grid-template-columns: 130px 1fr auto; gap: 24px; align-items: center; padding: clamp(26px, 4.4vh, 44px) 0; border-bottom: 1px solid var(--line); position: relative; transition: padding 0.5s var(--ease); }
.post::before { content: ""; position: absolute; inset: 0 calc(var(--gut) * -0.5); border-radius: 18px; background: var(--card); opacity: 0; transition: opacity 0.4s; z-index: -1; }
.post:hover { padding-left: 22px; padding-right: 22px; }
.post:hover::before { opacity: 1; }
.post__k { font-size: 13px; color: var(--coral-d); font-weight: 600; }
.post h3 { font: 600 clamp(20px, 2.2vw, 32px)/1.4 var(--f-serif); }
.post p { margin-top: 6px; color: var(--mut); font-size: 15px; }
.post__s { font-size: 13px; color: var(--mut); padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px; white-space: nowrap; }

/* ---------- 关于页 ---------- */
/* 常用技术：分类在左，技术名在右；悬停的那一项亮起，同一行其余变淡 */
.stack { margin: 0; border-top: 1px solid var(--line); }
.stack__r { display: grid; grid-template-columns: clamp(140px, 18vw, 240px) 1fr; align-items: baseline; gap: 24px; padding: clamp(20px, 3.4vh, 34px) 0; border-bottom: 1px solid var(--line); }
.stack dt { display: flex; align-items: baseline; gap: 16px; font-size: 15px; color: var(--mut); }
.stack dt b { font: 500 12px var(--f-disp); color: var(--coral-d); }
.stack dd { margin: 0; display: flex; flex-wrap: wrap; gap: 6px clamp(22px, 3.4vw, 56px); }
.stack dd span { position: relative; font: 600 clamp(22px, 2.6vw, 38px)/1.3 var(--f-disp); white-space: nowrap; cursor: default; transition: color 0.3s, opacity 0.3s, transform 0.45s var(--ease); }
.stack dd span::before { content: ""; position: absolute; left: -16px; top: 50%; width: 8px; height: 8px; margin-top: -4px; border-radius: 50%; background: var(--coral); transform: scale(0); transition: transform 0.35s var(--ease); }
.stack dd:hover span { opacity: 0.32; }
.stack dd span:hover { opacity: 1; color: var(--coral-d); transform: translateX(8px); }
.stack dd span:hover::before { transform: scale(1); }
.meet { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 6vw, 100px); align-items: center; }
.meet__ms { position: relative; justify-self: center; width: min(74%, 360px); }
.meet__bub { position: absolute; left: 78%; top: 4%; background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 18px 18px 18px 4px; font-size: 15px; white-space: nowrap; animation: ms-float 3.6s ease-in-out infinite; }
.meet .ms-spark { fill: #fffaf0; }
.meet p { margin-top: 20px; max-width: 30em; color: var(--mut); }
.info { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.info > div { padding: 28px 0; border-bottom: 1px solid var(--line); }
.info > div:nth-child(odd) { padding-right: 28px; }
.info > div:nth-child(even) { padding-left: 28px; border-left: 1px solid var(--line); }
.info small { display: block; font-size: 13px; color: var(--mut); margin-bottom: 6px; }
.info b { font: 600 clamp(18px, 1.8vw, 24px)/1.5 var(--f-serif); }
.info a:hover { color: var(--coral-d); }

/* ---------- 加入我们 ---------- */
.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2vw, 28px); margin-top: clamp(36px, 6vh, 70px); }
.trio__i { border-radius: 28px; padding: 30px; background: var(--c); color: var(--ink); min-height: 280px; display: flex; flex-direction: column; justify-content: space-between; transition: transform 0.6s var(--ease); }
.trio__i:hover { transform: translateY(-10px) rotate(1.2deg); }
.trio__i b { font: 500 13px var(--f-disp); }
.trio__i h3 { font: 600 clamp(22px, 2.1vw, 30px)/1.35 var(--f-serif); }
.trio__i p { margin-top: 10px; font-size: 15px; color: rgba(28, 26, 23, 0.76); }
.open { margin-top: clamp(60px, 10vh, 120px); display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(28px, 6vw, 100px); align-items: center; padding: clamp(30px, 5vw, 64px); border-radius: 32px; background: var(--card); }
.open p { margin-top: 16px; color: var(--mut); }
.open__r { justify-self: end; display: grid; justify-items: center; gap: 22px; }
.open__r .ms { width: 130px; }

/* ---------- 联系页 ---------- */
.ct { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-top: clamp(30px, 6vh, 70px); }
.ct > * { padding: clamp(26px, 5vh, 56px) 28px; display: grid; gap: 14px; align-content: start; transition: background 0.4s; }
.ct > * + * { border-left: 1px solid var(--line); }
.ct > a:hover { background: var(--card); }
.ct small { font: 400 11px var(--f-disp); letter-spacing: 0.14em; color: var(--mut); }
.ct b { font: 600 clamp(20px, 2.2vw, 32px)/1.4 var(--f-serif); word-break: break-word; }
.ct span { font-size: 14px; color: var(--mut); }
.wx { display: grid; grid-template-columns: auto 1fr auto; gap: clamp(24px, 4vw, 56px); align-items: center; margin-top: clamp(28px, 5vh, 48px); padding: clamp(22px, 3.4vw, 44px); border-radius: 32px; background: var(--card); }
.wx__qr { width: clamp(150px, 15vw, 196px); padding: 10px; border-radius: 20px; background: #fff; box-shadow: 0 10px 30px rgba(28, 26, 23, 0.08); transition: transform 0.6s var(--ease); }
@media (hover: hover) and (pointer: fine) {
  .wx:hover .wx__qr { transform: rotate(-3deg) scale(1.04); }
}
.wx__qr img { width: 100%; height: auto; border-radius: 10px; }
.wx__t { display: grid; gap: 14px; }
.wx__t small { font: 400 11px var(--f-disp); letter-spacing: 0.14em; color: var(--mut); }
.wx__t b { font: 600 clamp(24px, 2.6vw, 38px)/1.3 var(--f-serif); }
.wx__t span { color: var(--mut); max-width: 28em; }
.wx__open { display: inline-flex; align-items: center; gap: 14px; justify-self: start; min-height: 44px; border-bottom: 1px solid var(--line); font-size: 14px; }
.wx__open i { font-style: normal; color: var(--coral); }
.wx__ms { width: clamp(90px, 10vw, 140px); }
.contact-note { margin-top: 34px; max-width: 48em; }
.promise { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.promise li { display: inline-flex; align-items: center; gap: 10px; padding: 10px 20px; border-radius: 999px; border: 1px solid var(--line); font-size: 15px; }
.promise b { font: 600 18px var(--f-disp); color: var(--coral); }

/* ---------- 页脚 ---------- */
.ft { position: relative; padding: clamp(50px, 8vh, 90px) 0 64px; }
/* 大字标：字母站在一条线上，随滚动从线下逐个升起（--t），鼠标靠近的字母抬起并变色（--h） */
.ft__word {
  display: flex; justify-content: space-between; align-items: flex-end; overflow: hidden;
  padding-top: 0.16em; border-bottom: 1px solid var(--line);
  font: 700 min(13vw, 190px)/0.84 var(--f-disp); letter-spacing: -0.02em;
  -webkit-user-select: none; user-select: none;
}
.ft__word span { display: block; }
.ft__word b {
  display: block; font-weight: 700;
  color: color-mix(in srgb, var(--c, var(--coral)) calc(var(--h, 0) * 100%), var(--fg));
  transform: translateY(calc((1 - clamp(0, var(--t, 1) * 2 - var(--i) * 0.1, 1)) * 105%));
  translate: 0 calc(var(--h, 0) * -7%);
  transition: translate 0.5s var(--ease), color 0.4s;
}
.ft__grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr auto; gap: clamp(28px, 5vw, 80px); padding: clamp(40px, 7vh, 80px) 0; }
.ft__qr img { width: 112px; height: auto; padding: 6px; border-radius: 12px; background: #fff; }
.ft__qr p { margin-top: 10px; font-size: 13px; color: var(--mut); }
.ft__qr a { display: inline-flex; align-items: center; min-height: 44px; border-bottom: 1px solid var(--line); }
.ft__brand p { margin-top: 16px; color: var(--mut); }
.ft small { display: block; font: 400 11px var(--f-disp); letter-spacing: 0.14em; color: var(--mut); margin-bottom: 16px; }
.ft__nav a, .ft__ct a, .ft__ct p { display: block; padding: 4px 0; }
.ft__nav a:hover, .ft__ct a:hover, .ft__bot a:hover { color: var(--coral); }
.ft__bot { display: flex; justify-content: flex-start; gap: 8px 24px; flex-wrap: wrap; padding-top: 24px; border-top: 1px solid var(--line); font-size: 13px; color: var(--mut); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .cases { grid-template-columns: repeat(3, 1fr); }
  .orbit { opacity: 0.5; }
}
@media (max-width: 900px), (hover: none) and (pointer: coarse) and (max-height: 500px) {
  :root { --hd: calc(64px + env(safe-area-inset-top, 0px)); --gut: max(clamp(20px, 4vw, 56px), env(safe-area-inset-left, 0px), env(safe-area-inset-right, 0px)); }
  .nav { display: none; }
  .hd { gap: 12px; padding-top: env(safe-area-inset-top, 0px); padding-left: max(var(--gut), env(safe-area-inset-left, 0px)); padding-right: max(var(--gut), env(safe-area-inset-right, 0px)); }
  .hd.is-hidden { transform: none; }
  .menu-open .hd { background: var(--night); }
  .hd__r { gap: 8px; flex: none; }
  .hd .pill { height: 44px; padding: 0 12px; white-space: nowrap; }
  .hd .pill > i, .hd .pill .roll > span + span { display: none; }
  .hd .pill .roll > span:first-child { transform: none; }
  .burger { display: block; width: 44px; height: 44px; }
  .contact-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
  .contact-actions .pill { height: 44px; padding: 0 20px; }
  .contact-actions .pill--line { background: transparent; color: var(--fg); border: 1px solid var(--line); }
  body[data-page="contact"] .scrolltip { display: none; }
  .hud__c { display: none; }
  .hud { justify-content: flex-end; bottom: max(18px, env(safe-area-inset-bottom, 0px)); }
}
@media (max-width: 900px) {
  .stage__s--1, .stage__s--2, .stage__s--3 { left: var(--gut); right: var(--gut); top: auto; bottom: 11vh; transform: none; width: auto; }
  .chap__d { margin: 14px 0; }
  .stage__s--0 { bottom: 20vh; }
  .stage__hint .ms { width: 44px; }
  .intro-grid, .ph__row, .faq, .meet, .open { grid-template-columns: 1fr; }
  .ph__note, .open__r { justify-self: start; }
  .faq__side { position: static; }
  .faq__side .ms { display: none; }
  .svc { grid-template-columns: 1fr; gap: 14px; }
  .svc__no { padding-top: 0; }
  .orbit { position: relative; right: auto; top: auto; transform: none; width: min(70vw, 300px); margin: 10px auto 0; opacity: 1; }
  @keyframes orbit { from { transform: rotate(0deg) translateX(min(35vw, 150px)) rotate(0deg); } to { transform: rotate(360deg) translateX(min(35vw, 150px)) rotate(-360deg); } }
  .hs__head { position: absolute; top: calc(var(--hd) + 3vh); width: auto; right: var(--gut); }
  .hs__head p { display: none; }
  .hs__view { -webkit-mask-image: none; mask-image: none; margin-top: 14vh; }
  .hs__track { padding-left: var(--gut); }
  .step, .vcard { width: 76vw; }
  .step:nth-child(even), .vcard:nth-child(even) { margin-top: 0; }
  .vcard { min-height: 44vh; }
  .hs__ms { left: auto; right: var(--gut); bottom: 10vh; width: 84px; }
  .cases { grid-template-columns: repeat(2, 1fr); }
  .trio { grid-template-columns: 1fr; }
  .trio__i { min-height: 200px; }
  .ct { grid-template-columns: 1fr; }
  .ct > * + * { border-left: 0; border-top: 1px solid var(--line); }
  .ct > * { padding-left: 0; padding-right: 0; }
  .ft__grid { grid-template-columns: 1fr 1fr; }
  .ft__brand { grid-column: 1 / -1; }
  .meet__ms { width: 52%; }
  .acc__h { grid-template-columns: 44px 1fr 44px; }
  .acc__p p { padding: 0 0 28px 60px; }
  .faq .acc__p p { padding-right: 0; }
}
@media (max-width: 640px) {
  .stats { grid-template-columns: 1fr; }
  .stat, .stat + .stat { padding: 24px 0; border-left: 0; }
  .stat + .stat { border-top: 1px solid var(--line); }
  .adv__hd { flex-direction: column; align-items: flex-start; }
  .cases { grid-template-columns: 1fr; }
  .post { grid-template-columns: 1fr; gap: 8px; }
  .post__s { justify-self: start; }
  .stack__r { grid-template-columns: 1fr; gap: 10px; }
  .info { grid-template-columns: 1fr; }
  .info > div:nth-child(n) { padding: 22px 0; border-left: 0; }
  .ft__grid { grid-template-columns: 1fr; }
  .wx { grid-template-columns: 1fr; }
  .wx__ms { display: none; }
  .cta__m { top: 15%; }
  .meet__bub { left: 60%; }
}
@media (max-width: 380px) {
  .chap__t { font-size: clamp(28px, 9vw, 34px); }
}
/* 手机横屏沿用图文分列，图形和文字都避开固定导航。 */
@media (hover: none) and (pointer: coarse) and (orientation: landscape) and (max-height: 500px) {
  .stage__s--1, .stage__s--2, .stage__s--3 { left: auto; right: var(--gut); top: calc(50% + var(--hd) / 2); bottom: auto; width: calc(50% - var(--gut)); transform: translateY(-50%); }
  .chap__t { font-size: clamp(26px, 4vw, 38px); margin-top: 6px; }
  .chap__no { font-size: 11px; }
  .chap__en { font-size: 12px; }
  .chap__d { font-size: 13px; line-height: 1.6; margin: 10px 0; }
  .stage__s .tag { font-size: 12px; padding: 3px 12px; }
  .stage__s--0 { bottom: 20vh; }
  .stage__s--0 h1 { font-size: clamp(26px, 4.4vw, 38px); }
  .stage__s--0 p { margin-top: 8px; font-size: 14px; }
  .stage__hint { display: flex; align-items: center; gap: 8px; bottom: max(10px, env(safe-area-inset-bottom, 0px)); }
  .stage__hint .ms { width: 28px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .js [data-split] .ch, .js .reveal { opacity: 1; filter: none; transform: none; }
  .stage { height: auto; }
  .stage__pin { position: relative; height: auto; padding: calc(var(--hd) + 40px) var(--gut) 60px; display: grid; gap: 60px; }
  #stageCv, .stage__hint { display: none; }
  .stage__s { position: static; opacity: 1; visibility: visible; transform: none; width: auto; text-align: left; }
  .circ { height: auto; }
  .circ__pin { position: relative; height: auto; }
  .circ__dark, .circ__light { position: relative; min-height: 70vh; clip-path: none !important; }
  .hs { height: auto !important; }
  .hs__pin { position: relative; height: auto; display: block; padding: calc(var(--hd) + 40px) 0 60px; }
  .hs__head { position: static; margin: 0 var(--gut) 40px; }
  .hs__view { overflow-x: auto; -webkit-mask-image: none; mask-image: none; }
  .hs__track { padding-left: var(--gut); transform: none !important; }
  .step { opacity: 1; }
  .hs__ms, .hs__bar { display: none; }
}