:root {
  --navy-950: #071a23;
  --navy-900: #0a2430;
  --navy-800: #0e3341;
  --teal-700: #0f4c5c;
  --teal-500: #2f7f8f;
  --accent: #e8643c;
  --accent-dark: #cf5230;
  --gold: #c99a3e;
  --ink: #142630;
  --muted: #5a6b75;
  --line: #e3eaed;
  --soft: #f4f7f8;
  --card: #ffffff;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(10, 36, 48, .06), 0 8px 24px rgba(10, 36, 48, .06);
  --shadow-lift: 0 2px 4px rgba(10, 36, 48, .06), 0 18px 40px rgba(10, 36, 48, .12);
  --font: Inter, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-head: Poppins, Inter, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { margin: 0; background: #fff; color: var(--ink); font: 16px/1.65 var(--font); -webkit-font-smoothing: antialiased; }
img, svg { display: block; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; margin: 0; text-wrap: balance; }
p { text-wrap: pretty; }
.lang-zh h1, .lang-zh h2, .lang-zh h3 { letter-spacing: .01em; text-wrap: wrap; }

/* 泰文页：泰文字形上下有声调和元音符号，行距要更大，字距不要拉开 */
.lang-th { --font: Inter, "Noto Sans Thai", -apple-system, "Thonburi", "Leelawadee UI", sans-serif;
  --font-head: Poppins, Prompt, "Noto Sans Thai", "Thonburi", sans-serif; line-height: 1.8; }
.lang-th h1, .lang-th h2, .lang-th h3, .lang-th h4 { line-height: 1.4; }
.lang-th .eyebrow, .lang-th .metric, .lang-th .demo-label, .lang-th .plan .badge { letter-spacing: .02em !important; }
.lang-th .hero h1 { font-size: clamp(2rem, 4vw, 3.1rem); text-wrap: wrap; }
.nw { white-space: nowrap; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 820px; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 26px; border-radius: 999px;
  font: 600 15px/1 var(--font-head); text-decoration: none; border: 2px solid transparent; cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 8px 20px rgba(232, 100, 60, .28); }
.btn-accent:hover { background: var(--accent-dark); box-shadow: 0 12px 26px rgba(232, 100, 60, .34); }
.btn-light { background: #fff; color: var(--navy-900); }
.btn-outline { border-color: var(--line); color: var(--navy-900); background: #fff; }
.btn-outline:hover { border-color: var(--navy-900); }
.btn-sm { padding: 10px 18px; font-size: 14px; border-radius: 10px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .6; cursor: wait; transform: none; }

/* 顶部导航 */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .92); backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; gap: 28px; height: 68px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 700 19px/1 var(--font-head); color: var(--navy-900); }
.logo b { margin-left: 3px; color: var(--accent); font-weight: 700; }
.logo-zh { margin-left: 2px; padding-left: 10px; border-left: 1px solid var(--line); font: 600 15px/1 var(--font); color: var(--muted); letter-spacing: .08em; }
.logo-light .logo-zh { border-color: rgba(255, 255, 255, .2); color: rgba(255, 255, 255, .7); }
.links { display: flex; gap: 26px; margin-left: auto; }
.links a { text-decoration: none; font-size: 15px; color: var(--ink); opacity: .85; }
.links a:hover { opacity: 1; color: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 14px; }
.lang { display: flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.lang a { padding: 6px 10px; font-size: 13px; text-decoration: none; color: var(--muted); }
.lang a.on { background: var(--navy-900); color: #fff; }

/* 首屏 */
.hero { position: relative; overflow: hidden; overflow: clip; color: #fff;
  background: linear-gradient(135deg, var(--navy-950) 0%, var(--navy-800) 55%, var(--teal-700) 100%); }
.glow { position: absolute; border-radius: 50%; filter: blur(70px); pointer-events: none; }
.glow-a { width: 520px; height: 520px; right: -140px; top: -180px; background: rgba(232, 100, 60, .32); }
.glow-b { width: 460px; height: 460px; left: -180px; bottom: -220px; background: rgba(47, 127, 143, .45); }
.hero-in { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; padding: 96px 24px 104px; }
.eyebrow { margin: 0 0 14px; font: 600 12.5px/1.4 var(--font); letter-spacing: .16em; text-transform: uppercase; color: var(--accent); }
.eyebrow-gold { color: var(--gold); }
.lang-zh .eyebrow { letter-spacing: .12em; }
.hero h1 { font-size: clamp(2.3rem, 4.6vw, 3.7rem); font-weight: 700; letter-spacing: -.01em; }
.hero h1 .hl { color: var(--accent); }
.lead { margin: 22px 0 0; font-size: 18px; color: rgba(255, 255, 255, .82); max-width: 560px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 30px 0 0; }
.chips li { display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: 999px; background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .16); font-size: 14px; }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex: none; }
.dot-blue { background: #4c8dff; }
.dot-violet { background: #9b7bff; }
.dot-amber { background: #f2b544; }
.dot-deep { background: #4d6bfe; }
.hero-note { margin: 22px 0 0; font-size: 14px; color: rgba(255, 255, 255, .6); }

/* 首屏右侧的 AI 回答示意卡 */
.demo { margin: 0; padding: 26px; border-radius: 18px; background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .16);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: 0 30px 60px rgba(0, 0, 0, .25); }
.demo-label { margin: 0 0 16px; font: 600 12px/1.4 var(--font); letter-spacing: .14em; text-transform: uppercase; color: var(--gold); }
.bubble { border-radius: 14px; padding: 14px 16px; }
.bubble-q { margin-left: 18%; background: var(--accent); color: #fff; font-size: 17px; font-weight: 600; border-bottom-right-radius: 4px; }
.bubble-q small { display: block; margin-top: 4px; font-size: 12.5px; font-weight: 400; opacity: .85; }
.bubble-q small:empty { display: none; }
.bubble-a { margin-top: 14px; margin-right: 6%; background: rgba(255, 255, 255, .95); color: var(--ink); border-bottom-left-radius: 4px; }
.demo-ai { display: flex; align-items: center; gap: 8px; margin: 0 0 10px; font-size: 13px; font-weight: 600; color: var(--muted); }
.answer { margin: 0; padding: 0; list-style: none; counter-reset: a; }
.answer li { counter-increment: a; display: flex; align-items: center; gap: 10px; padding: 9px 0; border-top: 1px solid var(--line); font-size: 14px; }
.answer li::before { content: counter(a) "."; width: 18px; color: var(--muted); font-weight: 600; }
.answer .bar { height: 10px; width: var(--w); max-width: 60%; border-radius: 6px;
  background: linear-gradient(90deg, #d5dfe3 0%, #edf2f4 50%, #d5dfe3 100%); background-size: 200% 100%; animation: shimmer 2.4s linear infinite; }
.answer em { margin-left: auto; font-style: normal; font-size: 12px; font-weight: 600; color: var(--teal-500); background: #e6f1f3; padding: 3px 9px; border-radius: 999px; white-space: nowrap; }
.answer li.you { font-weight: 600; }
.answer li.you em { color: var(--accent-dark); background: #fde9e2; animation: pulse 2s ease-in-out infinite; }
.demo-src { margin: 10px 0 0; font-size: 12.5px; color: var(--muted); }
.js .answer li { animation: rise .55s ease both; }
.js .answer li:nth-child(2) { animation-delay: .25s; }
.js .answer li:nth-child(3) { animation-delay: .5s; }
.js .answer li:nth-child(4) { animation-delay: .9s; }

/* 数字条 */
.strip { background: var(--navy-950); color: #fff; }
.strip-in { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 30px 16px; text-align: center; border-left: 1px solid rgba(255, 255, 255, .1); }
.stat:first-child { border-left: 0; }
.stat b { display: block; font: 700 34px/1.1 var(--font-head); color: var(--gold); }
.stat span { display: block; margin-top: 6px; font-size: 14px; color: rgba(255, 255, 255, .7); }

/* 通用区块 */
.section { padding: 96px 0; }
.soft { background: var(--soft); }
.head { text-align: center; max-width: 760px; margin: 0 auto 48px; }
.head h2 { font-size: clamp(1.8rem, 3.2vw, 2.5rem); color: var(--navy-900); }
.sub { margin: 18px 0 0; font-size: 17px; color: var(--muted); }
.grid { display: grid; gap: 22px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; box-shadow: var(--shadow);
  transition: transform .22s ease, box-shadow .22s ease; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.card h3 { font-size: 18px; color: var(--navy-900); }
.card p { margin: 10px 0 0; color: var(--muted); font-size: 15px; }
.card-line h3::before { content: ""; display: block; width: 28px; height: 3px; margin-bottom: 16px; border-radius: 2px; background: var(--accent); }
.idx { display: block; margin-bottom: 14px; font: 700 15px/1 var(--font-head); letter-spacing: .08em; color: var(--accent); }
.card-top { border-top: 3px solid var(--accent); }
.metric { margin: 0 0 8px !important; font: 600 12.5px/1.4 var(--font) !important; letter-spacing: .12em; text-transform: uppercase; color: var(--accent) !important; }
.note { margin: 32px auto 0; max-width: 720px; text-align: center; font-size: 15px; color: var(--muted); padding: 14px 20px; border-radius: 12px; background: #fff; border: 1px solid var(--line); }

/* 各 AI 助手的使用比例（圆环） */
.rings { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; max-width: 980px; margin: 0 auto; }
.ring { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 28px 16px 24px; border-radius: var(--radius);
  background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.dial { position: relative; width: 148px; height: 148px; margin-bottom: 16px; }
.dial svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.dial circle { fill: none; stroke-width: 11; }
.dial .track { stroke: #edf2f4; }
.dial .value { stroke: var(--accent); stroke-linecap: round; stroke-dasharray: 100; stroke-dashoffset: calc(100 - var(--p)); transition: stroke-dashoffset 1.4s cubic-bezier(.2, .7, .2, 1); }
.ring-off .dial .value { stroke: #9fb3bc; }
.js .rings:not(.in) .dial .value { stroke-dashoffset: 100; }
.js .rings .ring:nth-child(2) .value { transition-delay: .12s; }
.js .rings .ring:nth-child(3) .value { transition-delay: .24s; }
.js .rings .ring:nth-child(4) .value { transition-delay: .36s; }
.dial b { position: absolute; inset: 0; display: grid; place-items: center; font: 700 28px/1 var(--font-head); color: var(--navy-900); }
.ring-off .dial b { color: var(--muted); }
.ring h3 { font-size: 19px; color: var(--navy-900); }
.ring .maker { margin: 2px 0 0; font-size: 14px; color: var(--muted); }
.ring .unit { margin: -4px 0 12px; font-size: 13.5px; color: var(--muted); }
.ring .tag { margin-top: 14px; padding: 4px 12px; border-radius: 999px; background: #fde9e2; color: var(--accent-dark); font-size: 12.5px; font-weight: 600; }
.ring .tag:empty { display: none; }
.source { margin: 28px auto 0; max-width: 760px; text-align: center; font-size: 13px; color: var(--muted); }

/* 市场数字 */
.bigstat { text-align: left; }
.bigstat b { display: block; font: 700 38px/1.1 var(--font-head); color: var(--accent); letter-spacing: -.01em; }
.bigstat h3 { margin-top: 12px; font-size: 16px; line-height: 1.4; }
.bigstat p { font-size: 13px !important; }

/* 做攻略的三个阶段 */
.stages { margin-bottom: 72px; }
.stage { display: flex; flex-direction: column; }
.stage h3 { font-size: 19px; }
.stage-hl { background: linear-gradient(160deg, var(--navy-900), var(--teal-700)); border: 0; color: #fff; }
.stage-hl h3 { color: #fff; }
.stage-hl .metric { color: var(--gold) !important; }
.huge { margin: 18px 0 0 !important; font: 700 56px/1 var(--font-head) !important; color: #fff !important; }
.stage-text { margin: 10px 0 20px !important; color: rgba(255, 255, 255, .85) !important; font-size: 16px !important; }
.stage-hl .stage-note { color: rgba(255, 255, 255, .6) !important; border-color: rgba(255, 255, 255, .15); }
.stage-note { margin: auto 0 0 !important; padding-top: 16px; font-size: 13px !important; border-top: 1px solid var(--line); }
.minibars { list-style: none; padding: 0; margin: 18px 0 18px; display: grid; gap: 12px; }
.minibars li { display: grid; grid-template-columns: 7.5em 1fr 3em; align-items: center; gap: 10px; font-size: 14px; }
.minibars span { color: var(--ink); }
.minibars i { height: 10px; border-radius: 6px; background: #edf2f4; position: relative; overflow: hidden; }
.minibars i::after { content: ""; position: absolute; inset: 0; width: var(--w); border-radius: 6px; background: var(--teal-500);
  transform-origin: left; transition: transform 1.1s cubic-bezier(.2, .7, .2, 1) .2s; }
.js .stage:not(.in) .minibars i::after { transform: scaleX(0); }
.minibars b { text-align: right; font: 600 14px/1 var(--font-head); color: var(--navy-900); }
.head-sub { margin-bottom: 36px; }
.head-sub h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }

/* 为什么从 AI 入手：编号列表，不用卡片 */
.reasons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 44px; }
.reason { display: grid; grid-template-columns: auto 1fr; gap: 18px; padding: 28px 0; border-top: 1px solid var(--line); }
.reason .idx { margin: 0; font: 700 26px/1.1 var(--font-head); color: var(--accent); }
.reason h3 { font-size: 18px; color: var(--navy-900); }
.reason p { margin: 8px 0 0; font-size: 15px; color: var(--muted); }

/* 页面中段的行动按钮 */
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 28px; margin-top: 56px; padding: 32px 40px;
  border-radius: 18px; color: #fff; background: linear-gradient(120deg, var(--navy-900), var(--teal-700)); box-shadow: var(--shadow-lift); }
.cta-band h3 { font-size: 24px; }
.cta-band p { margin: 8px 0 0; color: rgba(255, 255, 255, .78); }
.cta-band .btn { flex: none; }

/* 手机上滚动时固定在底部的申请按钮 */
.mobile-cta { display: none; }

/* 三步 */
.step .num { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 18px; border-radius: 50%; background: var(--navy-900); color: #fff; font: 700 17px/1 var(--font-head); }

/* 方案 */
.plans { align-items: stretch; }
.plan { position: relative; display: flex; flex-direction: column; padding-top: 34px; }
.plan .badge { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); margin: 0; padding: 5px 14px; border-radius: 999px;
  background: var(--gold); color: #fff; font: 600 12px/1.4 var(--font); letter-spacing: .1em; text-transform: uppercase; white-space: nowrap; }
.plan .badge:empty { display: none; }
.plan-featured { border: 2px solid var(--gold); box-shadow: var(--shadow-lift); }
.plan h3 { font-size: 21px; }
.plan .plan-desc { min-height: 48px; }
.price { margin: 22px 0 0 !important; font: 700 26px/1.2 var(--font-head) !important; color: var(--navy-900) !important; }
.price-note { margin: 4px 0 0 !important; font-size: 14px !important; }
.ticks { list-style: none; padding: 0; margin: 22px 0 28px; flex: 1; }
.ticks li { position: relative; padding: 7px 0 7px 28px; font-size: 15px; color: var(--ink); border-top: 1px solid var(--line); }
.ticks li:first-child { border-top: 0; }
.ticks li::before { content: ""; position: absolute; left: 4px; top: 14px; width: 11px; height: 6px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg); }
.ticks-light li { color: rgba(255, 255, 255, .88); border-color: rgba(255, 255, 255, .12); }

/* 常见问题 */
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px; transition: box-shadow .2s ease; }
.faq details[open] { box-shadow: var(--shadow); }
.faq summary { position: relative; padding: 20px 56px 20px 24px; list-style: none; cursor: pointer; font: 600 16.5px/1.4 var(--font-head); color: var(--navy-900); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); font: 400 26px/1 var(--font); color: var(--accent); transition: transform .2s ease; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { margin: 0; padding: 0 24px 22px; color: var(--muted); }

/* 免费检测表单 */
.audit { position: relative; overflow: hidden; overflow: clip; color: #fff; padding: 96px 0;
  background: linear-gradient(135deg, var(--navy-950) 0%, var(--navy-800) 60%, var(--teal-700) 100%); }
.audit-in { position: relative; display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.audit h2 { font-size: clamp(1.8rem, 3.2vw, 2.5rem); }
.audit .ticks { margin-top: 28px; }
.audit-mail { margin: 26px 0 0; font-size: 14.5px; color: rgba(255, 255, 255, .7); }
.audit-mail a { color: #fff; }
.form { background: #fff; color: var(--ink); border-radius: 18px; padding: 30px; box-shadow: 0 30px 60px rgba(0, 0, 0, .25); }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: block; margin-bottom: 16px; font-size: 14px; font-weight: 600; color: var(--navy-900); }
.form input:not([type=checkbox]), .form select, .form textarea { display: block; width: 100%; margin-top: 7px; padding: 12px 14px; border: 1px solid #d3dde1;
  border-radius: 10px; font: 400 15px/1.4 var(--font); color: var(--ink); background: #fbfcfd; transition: border-color .15s ease, box-shadow .15s ease; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--teal-500); box-shadow: 0 0 0 3px rgba(47, 127, 143, .18); background: #fff; }
.form textarea { resize: vertical; }
.form .consent { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; color: var(--muted); }
.form .consent input { margin-top: 4px; accent-color: var(--accent); width: 16px; height: 16px; flex: none; }
.form .consent a { color: var(--teal-700); }
.form-status { margin: 12px 0 0; font-size: 14px; font-weight: 600; }
.form-status:empty { display: none; }
.form-status.ok { color: var(--teal-700); }
.form-status.err { color: var(--accent-dark); }
.form-note { margin: 10px 0 0; font-size: 13px; color: var(--muted); text-align: center; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* 页脚 */
.footer { background: var(--navy-950); color: rgba(255, 255, 255, .72); padding: 64px 0 28px; font-size: 14.5px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.logo-light { color: #fff; }
.foot-tag { margin: 16px 0 0; max-width: 360px; }
.footer h4 { margin: 0 0 14px; font-size: 14px; color: #fff; letter-spacing: .04em; }
.footer a:not(.logo) { display: block; margin-bottom: 9px; text-decoration: none; }
.footer a:not(.logo):hover { color: #fff; }
.foot-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; margin-top: 44px; padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, .1); font-size: 13px; color: rgba(255, 255, 255, .5); }

/* 隐私声明页 */
.legal { padding: 72px 0 96px; }
.legal h1 { font-size: 34px; color: var(--navy-900); }
.legal .updated { color: var(--muted); font-size: 14px; }
.legal h2 { margin: 34px 0 10px; font-size: 20px; color: var(--navy-900); }
.legal p { color: #33454f; }

/* 滚动出现 */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
.js .grid .reveal:nth-child(2) { transition-delay: .08s; }
.js .grid .reveal:nth-child(3) { transition-delay: .16s; }
.js .grid .reveal:nth-child(4) { transition-delay: .24s; }

@keyframes shimmer { to { background-position: -200% 0; } }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(232, 100, 60, .35); } 50% { box-shadow: 0 0 0 6px rgba(232, 100, 60, 0); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}

@media (max-width: 1000px) {
  .links { display: none; }
  .nav-right { margin-left: auto; }
  .hero-in, .audit-in { grid-template-columns: 1fr; gap: 44px; }
  .hero-in { padding: 72px 24px 80px; }
  .demo { max-width: 520px; }
  .grid-4, .rings { grid-template-columns: repeat(2, 1fr); }
  .reasons { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
  .plans { gap: 30px; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .hero-in { padding: 56px 16px 64px; }
  .nav-in { gap: 12px; }
  .logo span { font-size: 17px; }
  .nav .btn-sm { padding: 9px 12px; font-size: 13px; }
  .lead { font-size: 16.5px; }
  .demo { padding: 18px; }
  .bubble-q { margin-left: 8%; font-size: 15.5px; }
  .strip-in { grid-template-columns: repeat(2, 1fr); }
  .stat { border-left: 0; border-top: 1px solid rgba(255, 255, 255, .1); }
  .stat:nth-child(-n+2) { border-top: 0; }
  .section, .audit { padding: 68px 0; }
  .head { margin-bottom: 34px; }
  .grid-4 { grid-template-columns: 1fr; }
  .lang-zh h2 { font-size: 1.5rem; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .bigstat { padding: 20px 16px; }
  .bigstat b { font-size: 28px; }
  .bigstat h3 { font-size: 14.5px; }
  .card { padding: 24px 20px; }
  .reasons { grid-template-columns: 1fr; }
  .reason { padding: 20px 0; gap: 14px; }
  .reason .idx { font-size: 22px; }
  .cta-band { flex-direction: column; align-items: flex-start; padding: 26px 22px; margin-top: 40px; }
  .cta-band h3 { font-size: 20px; }
  .cta-band .btn { width: 100%; }
  .js .mobile-cta { display: flex; position: fixed; left: 16px; right: 16px; bottom: 14px; z-index: 30; padding: 15px 20px;
    transform: translateY(160%); transition: transform .3s ease; }
  .js body.cta-on .mobile-cta { transform: none; }
  .rings { gap: 12px; }
  .ring { padding: 20px 10px 18px; }
  .dial { width: 112px; height: 112px; }
  .dial b { font-size: 22px; }
  .form { padding: 22px 18px; }
  .form .row { grid-template-columns: 1fr; gap: 0; }
  .foot-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 420px) {
  .nav .btn-sm { display: none; }
}