/* 塔塔文章助手 · 成熟产品视觉层
   公共内容页统一使用；首页保留自身同款视觉定义。 */

:root,
[data-theme="light"] {
  --bg-0: #f6f8f7;
  --bg-1: #f1f5f3;
  --bg-2: #f8faf9;
  --surface: #ffffff;
  --surface-2: #fbfcfc;
  --glass: rgba(255, 255, 255, .92);
  --glass-strong: #ffffff;
  --border: #e6ebe8;
  --border-strong: #dbe3df;
  --text: #15231f;
  --text-2: #42534d;
  --text-3: #71817b;
  --primary: #0b7a69;
  --primary-2: #09695b;
  --pink: #9a6700;
  --success: #0b7a69;
  --warning: #a16207;
  --danger: #c23b3b;
  --grad: linear-gradient(135deg, #0b7a69 0%, #0f927e 100%);
  --grad-soft: rgba(11, 122, 105, .08);
  --glow: none;
  --shadow-sm: 0 1px 2px rgba(21, 35, 31, .04);
  --shadow: 0 8px 24px rgba(21, 35, 31, .06);
  --shadow-lg: 0 22px 60px rgba(21, 35, 31, .11);
  --card-bg: #ffffff;
  --footer-bg: #101915;
  --footer-text: #91a39b;
  --footer-head: #edf5f1;
  color-scheme: light;
}

[data-theme="dark"] {
  --bg-0: #0f1714;
  --bg-1: #121c18;
  --bg-2: #0d1512;
  --surface: #17231f;
  --surface-2: #192722;
  --glass: rgba(23, 35, 31, .94);
  --glass-strong: #17231f;
  --border: #263a33;
  --border-strong: #31483f;
  --text: #edf5f1;
  --text-2: #b6c7c0;
  --text-3: #81978e;
  --primary: #49c7ad;
  --primary-2: #67d4bd;
  --pink: #e4b454;
  --success: #49c7ad;
  --warning: #e4b454;
  --danger: #ef8181;
  --grad: linear-gradient(135deg, #35b99f 0%, #55ccb4 100%);
  --grad-soft: rgba(73, 199, 173, .10);
  --glow: none;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .20);
  --shadow: 0 10px 28px rgba(0, 0, 0, .22);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, .34);
  --footer-bg: #0a100d;
  --footer-text: #81958c;
  --footer-head: #edf5f1;
  color-scheme: dark;
}

:root {
  --font-display: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-data: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
}

html {
  background: var(--bg-0);
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  padding-top: 67px;
  background: transparent;
  color: var(--text);
  font-family: var(--font-body), "Segoe UI Emoji", "Apple Color Emoji", sans-serif;
  font-size: 14px;
  line-height: 1.65;
}

body.admin-page { padding-top: 0; }

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.bg-g1 { background: radial-gradient(70vw 80vh at 92% -12%, rgba(11, 122, 105, .08), transparent 72%); }
.bg-g2 { background: radial-gradient(60vw 70vh at 2% 104%, rgba(11, 122, 105, .04), transparent 72%); }
.bg-g3,
.scroll-progress { display: none; }

::selection { background: rgba(11, 122, 105, .25); }

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* 顶部导航 */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: none;
}

.site-header.scrolled { box-shadow: 0 5px 22px rgba(21, 35, 31, .06); }
.nav { height: 66px; gap: 8px; }
.logo { gap: 10px; margin-right: 28px; white-space: nowrap; }
.logo-icon,
.login-card .logo .ic,
.topbar .title .ic {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  box-shadow: none;
  font-family: var(--font-body);
  font-size: 16px;
}
.logo:hover .logo-icon { transform: none; }
.logo-text { font-family: var(--font-body); font-size: 15px; letter-spacing: 0; }
.logo-text small { font-size: 9px; letter-spacing: 1.25px; margin-top: 0; }
.nav-links { gap: 2px; }
.nav-links a {
  border-radius: 8px;
  color: var(--text-2);
  font-size: 13.5px;
  font-weight: 600;
}
.nav-links a:hover,
.nav-links a.active { color: var(--primary); background: var(--grad-soft); }
.nav-links a.active::after { display: none; }
.nav-links a.nav-welfare { background: transparent; border-color: transparent; color: var(--text-2); }
.nav-links a.nav-welfare:hover { color: var(--primary); background: var(--grad-soft); }
.theme-toggle { border-color: var(--border-strong); background: var(--surface); box-shadow: none; }

/* 按钮与表单 */
.btn {
  border-radius: 9px;
  box-shadow: none;
  font-family: var(--font-body);
  font-weight: 650;
}
.btn-primary {
  background: var(--primary);
  box-shadow: 0 6px 16px rgba(11, 122, 105, .17);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 9px 22px rgba(11, 122, 105, .22); }
.btn-secondary { background: var(--surface); border-color: var(--border-strong); }
.btn-danger { background: rgba(194, 59, 59, .09); border-color: rgba(194, 59, 59, .20); color: var(--danger); }
input,
select,
textarea {
  border-color: var(--border-strong) !important;
  border-radius: 9px !important;
  background: var(--surface) !important;
  color: var(--text) !important;
  box-shadow: none !important;
}
input:focus,
select:focus,
textarea:focus { border-color: var(--primary) !important; }

/* 内容页 Hero */
.page-hero,
.hero {
  position: relative;
  padding: 58px 0 34px;
  text-align: left;
}
.page-hero .hero-issue,
.hero .hero-issue {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  padding: 6px 10px;
  border: 1px solid rgba(11, 122, 105, .16);
  border-radius: 999px;
  background: var(--grad-soft);
  color: var(--primary);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: .2px;
}
.page-hero .hero-issue::before,
.hero .hero-issue::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}
.hero-issue .issue-divider { width: 1px; height: 12px; background: currentColor; opacity: .22; }
.hero-issue .issue-num,
.hero-issue .issue-tag { color: inherit !important; }
.page-hero h1,
.hero h1 {
  margin: 0;
  color: var(--text);
  font-family: var(--font-body);
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 820;
  line-height: 1.18;
  letter-spacing: -1.8px;
}
.page-hero h1 .grad,
.hero h1 .grad {
  background: none;
  -webkit-text-fill-color: var(--primary);
  color: var(--primary);
}
.page-hero p,
.page-hero .sub,
.hero > p {
  max-width: 680px;
  margin: 16px 0 0;
  color: var(--text-2);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
}
body:has(#regBox) .hero > p { margin-left: auto; margin-right: auto; }
.back-row { margin-bottom: 18px; }
.back-btn { color: var(--text-3); font-weight: 600; }
.back-btn:hover { color: var(--primary); }

.content { max-width: none; margin: 0 auto; padding-bottom: 44px; }
.section { margin: 0 0 54px; }
.section-title { gap: 12px; margin-bottom: 20px; }
.section-title .num {
  min-width: 34px;
  height: 26px;
  padding: 0 8px;
  border: 1px solid rgba(11, 122, 105, .18);
  border-radius: 7px;
  background: var(--grad-soft);
  color: var(--primary);
  font-family: var(--font-data);
  font-size: 11px;
  line-height: 24px;
  text-align: center;
}
.section-title h2 { font-family: var(--font-body); font-size: 22px; letter-spacing: -.5px; }

/* 通用卡片 */
.card,
.step,
.scheme-item,
.faq-item,
.legal-card,
.tl-card,
.plan-card,
.claim-box,
.stat-card {
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.card:hover,
.step:hover,
.scheme-item:hover,
.faq-item:hover,
.plan-card:hover,
.claim-box:hover { transform: none; border-color: rgba(11, 122, 105, .30); box-shadow: var(--shadow-sm); }
.card-title { color: var(--text); font-family: var(--font-body); letter-spacing: 0; }
.card-title svg { color: var(--primary); }

/* 帮助 */
.steps { gap: 12px; }
.step { min-height: 156px; padding: 20px; }
.step-no { color: var(--primary); font-family: var(--font-data); font-size: 10.5px; letter-spacing: .4px; }
.step h4 { margin-top: 12px; font-size: 15px; }
.step p { margin-top: 7px; color: var(--text-3); line-height: 1.75; }
.scheme-grid { gap: 12px; }
.scheme-item { min-height: 154px; padding: 20px; }
.scheme-item .badge-num { border-radius: 8px; background: var(--primary); box-shadow: none; }
.scheme-item .tag { border-radius: 999px; background: var(--grad-soft); color: var(--primary); }
.scheme-item p { color: var(--text-3); line-height: 1.75; }
.tip-box,
.warn-box,
.note,
.empty-note {
  border-radius: 10px;
  background: var(--surface-2);
  border-color: var(--border);
  color: var(--text-3);
}
.faq-item { margin-bottom: 10px; padding: 0; overflow: hidden; }
.faq-item details { border: 0; background: transparent; }
.faq-item summary { padding: 17px 19px; color: var(--text); font-weight: 650; }
.faq-item .ans { margin: 0 19px; padding: 17px 0 19px 25px; border-top: 1px solid var(--border); color: var(--text-3); line-height: 1.9; }
kbd { border-radius: 5px; border-color: var(--border-strong); background: var(--surface-2); box-shadow: none; }

/* 会员 */
.plan-grid { gap: 12px; }
.plan-card { min-height: 174px; padding: 22px 18px; }
.plan-card.popular { border-color: rgba(11, 122, 105, .55); box-shadow: 0 10px 28px rgba(11, 122, 105, .10); }
.plan-card.popular::before { display: none; }
.plan-name { font-family: var(--font-body); }
.plan-price strong { font-family: var(--font-body); letter-spacing: -1.6px; }
.plan-tag,
.plan-save,
.plan-flag { border-radius: 999px; }
.compare { border: 1px solid var(--border-strong); border-radius: 14px; box-shadow: var(--shadow-sm); }
.compare th { background: var(--surface-2); color: var(--text-2); }
.compare th,
.compare td { border-color: var(--border); padding: 15px 16px; }
.compare .col-vip { background: var(--grad-soft); }
.kefu-hint { color: var(--text-3); }
.kefu-row { border-radius: 12px; border-color: var(--border-strong); background: var(--surface); }

/* 福利 */
body:has(#regBox) .hero { display: block; max-width: 860px; margin: 0 auto; text-align: center; padding-bottom: 32px; }
body:has(#regBox) .hero .hero-issue { margin-left: auto; margin-right: auto; }
.flash-banner {
  width: fit-content;
  margin: 0 auto 16px;
  border: 1px solid rgba(11, 122, 105, .18);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-2);
  box-shadow: none;
}
.flash-banner .ic { filter: grayscale(1); }
.vip-card {
  border: 1px solid rgba(11, 122, 105, .35);
  border-radius: 16px;
  background: linear-gradient(145deg, #0b5f53, #0b7a69);
  box-shadow: 0 20px 44px rgba(6, 63, 54, .18);
}
.vip-card::before,
.vip-card::after { opacity: .18; }
.vip-card .brand,
.vip-card .plan-name { font-family: var(--font-body); }
.claim-area { gap: 14px; }
.claim-box { padding: 24px; }
.claim-box h3 { font-family: var(--font-body); letter-spacing: -.2px; }
.claim-box h3 .ic { border-radius: 8px; background: var(--grad-soft); color: var(--primary); }
.share-link { border-radius: 9px; border-color: var(--border-strong); background: var(--surface-2); }
.claimed-tip .big,
.confetti { filter: grayscale(.75); }
.modal { border: 1px solid var(--border-strong); border-radius: 16px; background: var(--surface); box-shadow: var(--shadow-lg); }

/* 个人中心 */
.layout { gap: 16px; }
.layout .card { padding: 22px; }
.avatar { border-radius: 12px; box-shadow: none; }
.profile-stats { gap: 8px; }
.pstat { border: 1px solid var(--border); border-radius: 10px; background: var(--surface-2); }
.quota-row .bar { background: var(--surface-2); }
.quota-row .bar span { background: var(--primary); box-shadow: none; }
.theme-seg { border-color: var(--border-strong); background: var(--surface-2); }
.theme-seg button.active { background: var(--surface); color: var(--primary); box-shadow: var(--shadow-sm); }
.guest-card { max-width: 620px; padding: 46px 30px; }
.guest-card .g-icon { border-radius: 14px; background: var(--grad-soft); color: var(--primary); }

/* 更新日志 */
.timeline { max-width: 900px; padding-bottom: 60px; }
.timeline::before { background: var(--border-strong); }
.tl-item { padding-bottom: 16px; }
.tl-item .dot { border-color: var(--border-strong); background: var(--surface); box-shadow: none; }
.tl-item.current .dot { border-color: var(--primary); background: var(--primary); }
.tl-card { padding: 22px 24px; }
.tl-card::before { display: none; }
.tl-ver { font-family: var(--font-body); color: var(--text); }
.tl-badge { border-radius: 999px; background: var(--grad-soft); color: var(--primary); }
.tl-card li { color: var(--text-3); line-height: 1.75; }

/* 条款 */
.legal-nav {
  position: sticky;
  top: 82px;
  z-index: 5;
  width: fit-content;
  margin: 0 0 20px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.legal-nav a { color: var(--text-3); font-weight: 600; }
.legal-nav a:hover { color: var(--primary); background: var(--grad-soft); }
.legal-sec { scroll-margin-top: 142px; }
.legal-card { padding: 28px 30px; }
.legal-card::before { display: none; }
.sec-head { border-bottom-color: var(--border); }
.sec-head .idx { border-radius: 8px; background: var(--grad-soft); color: var(--primary); }
.sec-head h2 { font-family: var(--font-body); }
.legal-card h3 { color: var(--text); }
.legal-card p,
.legal-card li { color: var(--text-3); line-height: 1.85; }

/* 页脚 */
.site-footer { margin-top: 36px; padding: 38px 0 24px; background: var(--footer-bg); }
.footer-grid { padding-bottom: 24px; }
.footer-brand .logo-text { color: var(--footer-head); }
.footer-deco { max-width: 520px; color: var(--footer-text); }
.footer-motto { display: none; }
.footer-bottom { border-top-color: rgba(255, 255, 255, .08); color: var(--footer-text); }
.footer-pulse { color: var(--footer-text); }
.footer-pulse .pulse-dot { background: #55ccb4; box-shadow: none; }

/* 管理台 */
body.admin-page { background: var(--bg-0); }
.login-wrap { background: transparent; }
.login-card { width: min(420px, calc(100vw - 36px)); border: 1px solid var(--border-strong); border-radius: 16px; background: var(--surface); box-shadow: var(--shadow-lg); }
.login-card .logo { margin-right: 0; }
.login-card .logo b { font-family: var(--font-body); font-size: 18px; }
.login-card .logo small { color: var(--text-3); }
.topbar { background: var(--surface); border-bottom-color: var(--border); box-shadow: none; }
.topbar .inner { min-height: 66px; }
.topbar .title { font-family: var(--font-body); letter-spacing: -.3px; }
.admin > .container { padding-top: 28px; padding-bottom: 52px; }
.tabs { gap: 4px; padding: 5px; border: 1px solid var(--border-strong); border-radius: 11px; background: var(--surface); }
.tab { border: 0; border-radius: 8px; color: var(--text-3); }
.tab.active { background: var(--grad-soft); color: var(--primary); }
.panel { margin-top: 16px; }
.grid { gap: 12px; }
.stat-card { min-height: 118px; padding: 20px; }
.stat-card .l { color: var(--text-3); }
.stat-card .v { font-family: var(--font-body); letter-spacing: -1px; }
.admin .card { padding: 22px; }
.admin .card h3 { font-family: var(--font-body); letter-spacing: -.2px; }
.admin .card h3 .ic { filter: grayscale(1); opacity: .7; }
.chart { border-color: var(--border); border-radius: 10px; background: var(--surface-2); }
.tag { border-radius: 999px; }
.user-row { border-color: var(--border); border-radius: 10px; background: var(--surface-2); }

.free-first-card,
.access-standard {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  padding: 17px 19px;
  border: 1px solid rgba(11,122,105,.18);
  border-radius: 14px;
  background: var(--grad-soft);
}
.free-first-card .free-icon,
.access-standard .access-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: var(--primary);
  color: #fff;
  font-weight: 850;
}
.free-first-card strong,
.access-standard strong { display: block; color: var(--text); font-size: 15px; margin-bottom: 3px; }
.free-first-card p,
.access-standard p { color: var(--text-2); font-size: 12.5px; line-height: 1.65; }
.free-first-card .free-action,
.access-standard .access-action { color: var(--primary); font-size: 12.5px; font-weight: 750; text-decoration: none; white-space: nowrap; }
.pricing-section .section-title .num { width: auto; min-width: 34px; padding: 0 8px; }

/* 方案页：用创作节奏表达容量差异，不制造高低身份感。 */
.member-intro { max-width: 720px !important; }
.pricing-section { padding-top: 8px; }
.pricing-lead { margin: -9px 0 22px; max-width: 720px; color: var(--text-3); font-size: 14px; line-height: 1.8; }
.pricing-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.pricing-card {
  position: relative;
  overflow: hidden;
  min-height: 380px;
  padding: 30px;
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.pricing-card::after { content: ""; position: absolute; right: -80px; bottom: -100px; width: 230px; height: 230px; border-radius: 50%; background: radial-gradient(circle, rgba(11,122,105,.10), transparent 68%); pointer-events: none; }
.pricing-card.professional { border-color: rgba(11,122,105,.38); background: linear-gradient(145deg, var(--surface), rgba(11,122,105,.055)); }
.pricing-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.pricing-card h3 { margin: 0; color: var(--text); font-size: 25px; letter-spacing: -.7px; }
.plan-role { display: block; margin-top: 7px; color: var(--text-3); font-size: 13px; line-height: 1.6; }
.plan-signature { flex: 0 0 auto; padding: 6px 10px; border: 1px solid rgba(11,122,105,.22); border-radius: 999px; color: var(--primary); background: var(--grad-soft); font-size: 11px; font-weight: 800; letter-spacing: .5px; }
.price-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 25px 0 22px; }
.price-option { padding: 15px 16px; border: 1px solid var(--border); border-radius: 13px; background: var(--surface-2); }
.price-option small { display: block; margin-bottom: 4px; color: var(--text-3); font-size: 11px; letter-spacing: .5px; }
.price-option strong { color: var(--text); font-family: var(--font-data); font-size: 28px; letter-spacing: -1px; }
.price-option span { margin-left: 3px; color: var(--text-3); font-size: 12px; }
.price-option.annual { border-color: rgba(180,83,9,.20); background: rgba(180,83,9,.055); }
.plan-outcomes { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.plan-outcomes li { position: relative; padding-left: 22px; color: var(--text-2); font-size: 13px; line-height: 1.65; }
.plan-outcomes li::before { content: ""; position: absolute; left: 1px; top: .65em; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 4px rgba(11,122,105,.10); }
.opening-intent { margin: 20px 0 0; padding: 18px 20px; border: 1px solid var(--border); border-radius: 15px; background: var(--surface-2); }
.billing-standard { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 18px; overflow: hidden; border: 1px solid var(--border-strong); border-radius: 15px; background: var(--border); }
.billing-standard div { padding: 18px; background: var(--surface); }
.billing-standard b { display: block; margin-bottom: 5px; color: var(--text); font-size: 13px; }
.billing-standard span { color: var(--text-3); font-size: 12.5px; line-height: 1.65; }
.shared-standard { padding: 26px; border: 1px solid rgba(11,122,105,.22); border-radius: 18px; background: linear-gradient(135deg, rgba(11,122,105,.08), rgba(180,83,9,.045)); }
.shared-standard h3 { margin: 0; color: var(--text); font-size: 20px; }
.shared-standard > p { margin: 8px 0 20px; color: var(--text-3); font-size: 13.5px; line-height: 1.8; }
.shared-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.shared-grid div { padding: 15px; border: 1px solid rgba(11,122,105,.14); border-radius: 12px; background: rgba(255,255,255,.48); }
[data-theme="dark"] .shared-grid div { background: rgba(255,255,255,.035); }
.shared-grid b { display: block; color: var(--text); font-size: 13px; }
.shared-grid span { display: block; margin-top: 4px; color: var(--text-3); font-size: 11.5px; line-height: 1.55; }
.rights-heading { margin: 32px 0 15px; }
.rights-heading h3 { margin: 0; color: var(--text); font-size: 18px; }
.rights-heading p { margin: 6px 0 0; color: var(--text-3); font-size: 13px; line-height: 1.7; }
.rights-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.rights-card { padding: 22px; border: 1px solid var(--border-strong); border-radius: 16px; background: var(--surface); box-shadow: var(--shadow-sm); }
.rights-card header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; padding-bottom: 15px; border-bottom: 1px solid var(--border); }
.rights-card h4 { margin: 0; color: var(--text); font-size: 17px; }
.rights-card header p { margin: 4px 0 0; color: var(--text-3); font-size: 12px; }
.rights-card .rhythm { flex: 0 0 auto; color: var(--primary); font-size: 11px; font-weight: 800; letter-spacing: .5px; }
.rights-card dl { display: grid; grid-template-columns: 1fr auto; gap: 11px 18px; margin: 17px 0 0; }
.rights-card dt { color: var(--text-3); font-size: 12.5px; }
.rights-card dd { margin: 0; color: var(--text); font-size: 12.5px; font-weight: 700; text-align: right; }
.rights-notes { display: grid; gap: 6px; margin-top: 15px; }
.rights-notes p { margin: 0; color: var(--text-3); font-size: 12px; line-height: 1.7; }
.opening-flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.opening-flow div { padding: 20px; border: 1px solid var(--border-strong); border-radius: 14px; background: var(--surface); }
.opening-flow small { display: block; color: var(--primary); font-family: var(--font-data); font-weight: 800; letter-spacing: .8px; }
.opening-flow b { display: block; margin: 9px 0 6px; color: var(--text); font-size: 14px; }
.opening-flow p { margin: 0; color: var(--text-3); font-size: 12.5px; line-height: 1.7; }

@media (max-width: 1080px) {
  .nav-links { top: 66px; background: var(--surface); backdrop-filter: none; }
  .page-hero,
  .hero { padding-top: 44px; }
}

@media (max-width: 800px) {
  .steps,
  .scheme-grid,
  .plan-grid-4,
  .claim-area,
  .layout,
  .grid { grid-template-columns: 1fr 1fr; }
  .compare { overflow-x: auto; }
  .compare table { min-width: 720px; }
  .legal-card { padding: 24px; }
}

@media (max-width: 620px) {
  .container { padding-left: 18px; padding-right: 18px; }
  /* 防止 iPhone Safari 聚焦输入框时自动放大页面。 */
  input:not([type="checkbox"]):not([type="radio"]),
  textarea,
  select { font-size: 16px !important; }
  .nav { gap: 5px; }
  .logo { gap: 8px; margin-right: 0; }
  .logo-icon { width: 32px; height: 32px; }
  .logo-text { font-size: 14px; }
  .theme-toggle { display: none !important; }
  .nav-right .btn-primary { padding: 7px 11px; font-size: 12.5px; }
  .nav { height: 60px; }
  .logo-text small { display: none; }
  .nav-toggle { margin-left: auto; }
  .nav-spacer { display: none; }
  .nav-links {
    top: 60px;
    left: 10px;
    right: 10px;
    padding: 10px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px;
    border-radius: 16px;
    box-shadow: 0 16px 42px rgba(21,35,31,.14);
  }
  .nav-links.open { display: grid; }
  .nav-links::before {
    content: "21 种题材 · 三档处理深度 · 云端持续成稿";
    grid-column: 1 / -1;
    padding: 10px 12px;
    border-radius: 11px;
    background: var(--grad-soft);
    border: 1px solid rgba(11,122,105,.16);
    color: var(--primary);
    font-size: 12px;
    font-weight: 750;
    line-height: 1.5;
    text-align: center;
  }
  .nav-links a { min-width: 0; padding: 10px 9px; text-align: center; background: var(--surface-2); }
  .nav-links a[data-nav="member"] { color: var(--text-3); }
  .page-hero,
  .hero { padding: 34px 0 26px; }
  .page-hero h1,
  .hero h1 { font-size: 32px; letter-spacing: -1.2px; }
  .page-hero p,
  .page-hero .sub,
  .hero > p { margin-top: 13px; font-size: 14px; }
  .section { margin-bottom: 42px; }
  .steps,
  .scheme-grid,
  .plan-grid-4,
  .claim-area,
  .layout,
  .grid { grid-template-columns: 1fr; }
  .step,
  .scheme-item { min-height: 0; }
  .pricing-section .plan-grid-4 { grid-template-columns: 1fr; }
  .free-first-card { grid-template-columns: auto 1fr; padding: 14px; gap: 11px; }
  .free-first-card .free-action { grid-column: 1 / -1; text-align: center; padding-top: 8px; border-top: 1px solid rgba(11,122,105,.14); }
  .pricing-cards,
  .rights-grid,
  .opening-flow { grid-template-columns: 1fr; }
  .pricing-card { min-height: 0; padding: 23px 20px; }
  .price-pair { grid-template-columns: 1fr; }
  .billing-standard { grid-template-columns: 1fr; }
  .shared-grid { grid-template-columns: 1fr 1fr; }
  .access-standard { grid-template-columns: auto 1fr; }
  .access-standard .access-action { grid-column: 1 / -1; text-align: center; padding-top: 8px; border-top: 1px solid rgba(11,122,105,.14); }
  .share-row { flex-direction: column; align-items: stretch; }
  .share-row .btn { width: 100%; }
  .legal-nav { top: 74px; width: 100%; overflow-x: auto; }
  .legal-nav a { white-space: nowrap; }
  .legal-card { padding: 21px 18px; }
  .sec-head { align-items: flex-start; }
  .tl-card { padding: 19px; }
  .topbar .who { display: none; }
  .tabs { overflow-x: auto; }
  .tab { flex: 0 0 auto; white-space: nowrap; }
  .admin .form-row { align-items: stretch; }
  .admin .form-row .field,
  .admin .form-row .btn { width: 100% !important; max-width: none !important; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}