/* 内页样式：版式参照 thinkart.cn 的内页（页首色带、白色圆角卡、深色块、步骤面板、折叠列表、分类条、联系面板）。
   颜色、图形、文案均为本项目自有。文字一律夜青或纸白。 */

/* ---------- 页首 ---------- */
.t-cheng { --c: var(--cheng); --ink: var(--ye); --glass: rgba(251, 250, 246, .34); --glass-b: rgba(0, 48, 63, .16); }
.t-ye { --c: var(--ye); --ink: var(--bai); --glass: rgba(251, 250, 246, .1); --glass-b: rgba(251, 250, 246, .26); }
.t-he { --c: var(--he-700); --ink: var(--bai); --glass: rgba(251, 250, 246, .12); --glass-b: rgba(251, 250, 246, .3); }
.ph { position: relative; color: var(--ink); background: linear-gradient(180deg, var(--c) 0, var(--c) 66%, var(--bai) 100%); padding: 150px var(--pad) 200px; overflow: hidden; isolation: isolate; }
.ph-mark { position: absolute; z-index: -1; height: 130%; width: auto; right: -3%; top: -12%; opacity: .07; pointer-events: none; }
.t-cheng .ph-mark { opacity: .1; }
.ph-in { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(32px, 5vw, 80px); align-items: center; }
.crumb { display: flex; gap: 10px; font-size: 14px; letter-spacing: .06em; margin-bottom: 34px; opacity: .85; }
.crumb a:hover { text-decoration: underline; text-underline-offset: 4px; }
.ph h1 { font-size: clamp(38px, 4.8vw, 68px); font-weight: 400; line-height: 1.32; letter-spacing: .03em; text-wrap: balance; }
.ph h1 span { display: inline-block; }
.ph-sub { margin-top: 26px; font-size: 17px; max-width: 30em; opacity: .92; }
.ph .pill { margin-top: 36px; }
.t-cheng .pill-dark:hover { background: var(--he-800); }
.t-ye .pill-line, .t-he .pill-line { box-shadow: inset 0 0 0 1px var(--bai); }
.t-ye .pill-line:hover, .t-he .pill-line:hover { background: var(--bai); color: var(--ye); }
.gcard { background: var(--glass); border: 1px solid var(--glass-b); border-radius: 30px; padding: 34px 36px; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.gcard-h { display: flex; align-items: center; gap: 12px; font-size: 18px; font-weight: 500; }
.gcard-h i { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--ink); color: var(--c); font-style: normal; font-size: 15px; font-weight: 700; }
.gcard ul { margin-top: 18px; }
.gcard li a { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 14px 0; font-size: 16px; border-top: 1px solid var(--glass-b); transition: padding .3s var(--ease); }
.gcard li a:hover { padding-left: 8px; }
.gcard p { margin-top: 14px; font-size: 15.5px; line-height: 1.9; }
.ph-books { position: relative; width: 100%; max-width: 520px; justify-self: end; aspect-ratio: 1.08; }
.ph-books .bk { position: absolute; width: 44%; box-shadow: 0 30px 50px -26px rgba(0, 0, 0, .6); }
.ph-books .hb1 { left: 0; top: 16%; transform: rotate(-7deg); z-index: 1; }
.ph-books .hb2 { left: 28%; top: 0; z-index: 3; }
.ph-books .hb3 { left: 58%; top: 15%; transform: rotate(7deg); z-index: 2; }
.portrait { position: relative; width: min(100%, 400px); justify-self: end; aspect-ratio: 4 / 5; border-radius: 34px; overflow: hidden; background: #C9CFCD; }
.portrait svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.portrait .portrait-tag { bottom: 20px; }

/* ---------- 版心 ---------- */
.pg { padding: 0 0 130px; background: var(--bai); }
.pg-in { max-width: 1280px; margin: 0 auto; padding: 0 var(--pad); }
.pull { margin-top: -120px; position: relative; z-index: 2; }
.blk { margin-top: 110px; }
.twotone { margin-bottom: 44px; }
.twotone .eb { color: var(--muted); }
.twotone h2 { font-size: clamp(32px, 3.8vw, 54px); margin-top: 12px; letter-spacing: .02em; }
.twotone h2 em { display: block; font-style: normal; color: var(--muted); }
.twotone p.lead { margin-top: 18px; max-width: 36em; color: var(--ye-600); }
.on-dark .twotone .eb, .on-dark .eb { color: var(--ye-200); }
.on-dark .twotone h2 em { color: var(--ye-200); }

/* 白色圆角卡 + 竖线分栏 */
.wcard { background: #fff; border-radius: 32px; padding: 56px clamp(24px, 4vw, 56px); box-shadow: 0 40px 80px -56px rgba(0, 48, 63, .45); }
.cols { display: grid; grid-template-columns: repeat(var(--n, 5), minmax(0, 1fr)); }
.cols > div { padding: 4px 28px; border-left: 1px solid var(--line); }
.cols > div:first-child { padding-left: 0; border-left: 0; }
.cols h3 { font-size: 19px; font-weight: 500; margin-bottom: 16px; }
.cols p { font-size: 15px; line-height: 1.95; color: var(--muted); }

/* 深色块 */
.dblock { position: relative; overflow: hidden; isolation: isolate; background: var(--ye); color: var(--bai); border-radius: 38px; padding: clamp(36px, 5vw, 76px); }
.dblock .dm { position: absolute; z-index: -1; height: 120%; width: auto; right: -2%; top: -10%; opacity: .06; }
.db-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); gap: clamp(28px, 5vw, 80px); align-items: end; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 44px; }
.chips button { border: 0; background: rgba(251, 250, 246, .1); color: var(--bai); box-shadow: inset 0 0 0 1px rgba(251, 250, 246, .28); padding: 10px 22px; border-radius: 999px; font-size: 15px; transition: background .25s, color .25s; }
.chips button:hover { background: rgba(251, 250, 246, .22); }
.chips button[aria-selected="true"] { background: var(--cheng); color: var(--ye); box-shadow: none; font-weight: 500; }
.db-card { background: rgba(251, 250, 246, .08); border: 1px solid rgba(251, 250, 246, .22); border-radius: 28px; padding: 34px 36px; min-height: 280px; display: flex; flex-direction: column; }
.db-card h3 { font-size: 22px; font-weight: 500; }
.db-card h3 small { display: block; font-size: 13px; letter-spacing: .1em; color: var(--ye-200); margin-bottom: 8px; font-weight: 400; }
.db-card p { margin-top: auto; padding-top: 26px; font-size: 16px; line-height: 2; color: var(--chenwu); }
.db-card[hidden] { display: none; }

/* 步骤面板 */
.steps { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 0; background: #fff; border-radius: 32px; padding: 26px; box-shadow: 0 40px 80px -56px rgba(0, 48, 63, .4); }
.st-nav { display: grid; gap: 4px; align-content: start; padding-right: 20px; border-right: 1px solid var(--line); }
.st-nav button { border: 0; background: transparent; text-align: left; padding: 15px 22px; border-radius: 999px; font-size: 15px; transition: background .25s, color .25s; color: var(--muted); }
.st-nav button:hover { color: var(--ye); }
.st-nav button[aria-selected="true"] { background: var(--ye); color: var(--bai); }
.st-pane { display: grid; grid-template-columns: minmax(0, 1fr) 360px; }
.st-pane[hidden] { display: none; }
.st-main { padding: 20px 44px; display: flex; flex-direction: column; }
.st-main h3 { font-size: clamp(26px, 2.4vw, 34px); font-weight: 500; }
.st-main .st-sub { margin-top: 10px; font-size: 18px; color: var(--muted); }
.st-main .st-body { margin-top: auto; padding-top: 40px; font-size: 16px; line-height: 2; }
.st-main .st-body p + p { margin-top: 10px; }
.st-art { border-radius: 24px; padding: 30px; min-height: 380px; display: flex; flex-direction: column; justify-content: space-between; position: relative; overflow: hidden; }
.st-art::before { content: ""; position: absolute; width: 240px; height: 240px; border-radius: 50%; background: rgba(251, 250, 246, .13); right: -70px; top: -70px; }
.st-art svg { position: relative; margin: 20px auto 0; }
.st-art .st-tags { position: relative; display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.st-art .st-tags span { padding: 6px 16px; border-radius: 999px; background: rgba(251, 250, 246, .92); color: var(--ye); font-size: 13.5px; }
.st-art .st-k { position: relative; text-align: center; font-size: 17px; font-weight: 500; }
.sa1 { background: var(--he-700); color: var(--mitang); } .sa2 { background: var(--ye); color: var(--cheng); } .sa3 { background: var(--chenwu); color: var(--he-700); }
.sa4 { background: var(--mitang); color: var(--ye); } .sa5 { background: var(--cheng); color: var(--ye); } .sa6 { background: var(--huang); color: var(--ye); } .sa7 { background: var(--he); color: var(--bai); }

/* 折叠列表 */
.acc-wrap { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(30px, 6vw, 100px); align-items: start; }
.acc details { border-bottom: 1px solid var(--line); }
.acc details:first-child { border-top: 1px solid var(--line); }
.acc summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 26px 0; font-size: 19px; font-weight: 500; }
.acc summary::-webkit-details-marker { display: none; }
.acc summary::after { content: ""; flex: none; width: 36px; height: 36px; border-radius: 50%; background: var(--chengwu); background-image: linear-gradient(var(--ye), var(--ye)), linear-gradient(var(--ye), var(--ye)); background-size: 14px 2px, 2px 14px; background-position: center; background-repeat: no-repeat; transition: transform .35s var(--ease), background-color .3s; }
.acc details[open] summary::after { transform: rotate(45deg); background-color: var(--cheng); }
.acc summary:hover::after { background-color: var(--cheng); }
.acc .ans { padding: 0 60px 28px 0; font-size: 16px; line-height: 2; color: var(--muted); }
.acc .ans p + p { margin-top: 8px; }

/* 表格卡（两栏，深浅交替） */
.tbl { background: #fff; border-radius: 34px; padding: 22px; box-shadow: 0 40px 80px -56px rgba(0, 48, 63, .4); }
.tr { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 20px 40px; align-items: center; padding: 22px 30px; border-radius: 18px; background: #F4F5F2; transition: transform .35s var(--ease); }
.tr + .tr { margin-top: 10px; }
.tr:nth-child(even) { background: var(--ye); color: var(--bai); }
.tr:hover { transform: translateX(6px); }
.tr b { font-size: 20px; font-weight: 500; display: flex; align-items: center; gap: 16px; }
.tr b i { font-style: normal; flex: none; width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; background: var(--cheng); color: var(--ye); font-size: 18px; font-family: "Nunito", sans-serif; font-weight: 700; }
.tr:nth-child(even) b i { background: var(--chenwu); }
.tr p { font-size: 15.5px; line-height: 1.9; opacity: .9; }
.tr a { text-decoration: underline; text-underline-offset: 4px; }

/* 引语带 */
.qband { position: relative; overflow: hidden; isolation: isolate; background: var(--cheng); border-radius: 40px; padding: clamp(40px, 6vw, 90px); }
.qband .dm { position: absolute; z-index: -1; height: 130%; width: auto; right: 0; top: -15%; opacity: .1; }
.qband blockquote { font-size: clamp(28px, 3.6vw, 52px); line-height: 1.5; max-width: 16em; letter-spacing: .03em; }
.qband cite { display: block; margin-top: 22px; font-style: normal; font-size: 15px; opacity: .8; }

/* 时间线 */
.tl { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.tl > div { background: #fff; border-radius: 26px; padding: 32px 28px 34px; box-shadow: 0 30px 60px -48px rgba(0, 48, 63, .45); transition: transform .45s var(--ease); }
.tl > div:hover { transform: translateY(-8px); }
.tl > div:nth-child(even) { margin-top: 40px; }
.tl .y { font-size: 38px; font-weight: 300; line-height: 1.1; }
.tl h3 { font-size: 19px; margin: 20px 0 10px; }
.tl p { font-size: 15px; line-height: 1.9; color: var(--muted); }

/* 书籍详情块 */
.bookcard { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); align-items: center; background: #fff; border-radius: 36px; padding: clamp(28px, 4vw, 56px); box-shadow: 0 40px 80px -56px rgba(0, 48, 63, .4); }
.bookcard + .bookcard { margin-top: 28px; }
.bookcard .bk { width: 100%; box-shadow: 0 34px 50px -28px rgba(0, 48, 63, .55); transition: transform .6s var(--ease); }
.bookcard:hover .bk { transform: rotate(-3deg) translateY(-6px); }
.bookcard:nth-child(even) { grid-template-columns: minmax(0, 1fr) 300px; }
.bookcard:nth-child(even) .bk { order: 2; }
.bk-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: 14px; color: var(--muted); }
.bk-meta .st { padding: 3px 14px; border-radius: 999px; background: var(--mitang); color: var(--ye); font-size: 13px; }
.bookcard h3 { font-size: clamp(24px, 2.6vw, 36px); margin: 16px 0 14px; }
.bookcard .bk-d { color: var(--ye-600); max-width: 36em; }
.parts { margin-top: 26px; display: grid; gap: 0; }
.parts li { display: flex; gap: 16px; padding: 11px 0; border-top: 1px solid var(--line); font-size: 15.5px; }
.parts li b { flex: none; width: 5.5em; font-weight: 500; }
.parts li span { color: var(--muted); }

/* 路线 */
.route { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.route > div { border-radius: 30px; padding: 36px 34px 40px; position: relative; overflow: hidden; }
.route .rn { font-size: 14px; font-weight: 700; letter-spacing: .14em; }
.route h3 { font-size: 26px; margin: 10px 0 12px; }
.route p { font-size: 15.5px; line-height: 1.9; }
.route > div:nth-child(1) { background: var(--he-700); color: var(--bai); }
.route > div:nth-child(2) { background: var(--cheng); }
.route > div:nth-child(3) { background: var(--mitang); }

/* 分类条 + 淡色卡 */
.tabbar { display: flex; flex-wrap: wrap; gap: 6px; background: #fff; border-radius: 22px; padding: 8px; width: fit-content; max-width: 100%; box-shadow: 0 20px 50px -38px rgba(0, 48, 63, .4); }
.tabbar button { border: 0; background: transparent; padding: 13px 28px; border-radius: 15px; font-size: 16px; transition: background .25s, color .25s; }
.tabbar button:hover { background: #F4F5F2; }
.tabbar button[aria-selected="true"] { background: var(--ye); color: var(--bai); }
.plist { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 34px 28px; margin-top: 56px; align-items: start; }
.plist.is-filtered .pcard { margin-top: 0; }
.pcard[hidden] { display: none; }
.pcard:nth-child(3n+2) { margin-top: 60px; }
.pcard .pc-box { border-radius: 28px; padding: 32px 30px; min-height: 250px; display: flex; flex-direction: column; justify-content: space-between; transition: transform .45s var(--ease); }
.pcard:hover .pc-box { transform: translateY(-8px); }
.pcard h3 { font-size: 22px; font-weight: 500; line-height: 1.55; }
.pcard .pc-box p { font-size: 14.5px; line-height: 1.85; margin-top: 12px; color: var(--ye-600); }
.pcard .pc-tags { display: flex; align-items: center; gap: 12px; margin-top: 16px; font-size: 13.5px; color: var(--muted); }
.pcard .pc-tags b { font-weight: 500; padding: 3px 14px; border-radius: 999px; background: #fff; color: var(--ye); }
.pc1 { background: var(--chenwu); } .pc2 { background: var(--chengwu); } .pc3 { background: var(--mitang); }
.pc4 { background: #E4E9EA; } .pc5 { background: #ECEFE4; } .pc6 { background: #F2E6E1; }
.pcard.fade-in { animation: rise .55s var(--ease) both; }

/* 联系面板 */
.t-ct { background: var(--ye); }
.ct-wrap { background: var(--ye); padding: 130px var(--pad) 130px; position: relative; isolation: isolate; overflow: hidden; }
.ct-wrap .dm { position: absolute; z-index: -1; height: 120%; width: auto; right: -4%; top: -6%; opacity: .06; }
.ctp { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); background: #fff; border-radius: 34px; overflow: hidden; }
.ctp-l { background: #F4F5F2; padding: clamp(28px, 4vw, 52px); }
.ctp-r { padding: clamp(28px, 4vw, 52px); }
.ctp h1 { font-size: clamp(30px, 3.4vw, 46px); font-weight: 500; }
.ctp .back { display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; background: var(--chengwu); margin-right: 14px; vertical-align: middle; transition: background .25s; }
.ctp .back:hover { background: var(--cheng); }
.ctp h1 span { vertical-align: middle; }
.cc-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 34px; }
.cc { background: #fff; border-radius: 20px; padding: 26px 24px; display: flex; flex-direction: column; gap: 8px; min-height: 300px; }
.cc h3 { font-size: 17px; font-weight: 500; }
.cc small { font-size: 12.5px; color: var(--muted); }
.cc .big { font-size: 22px; font-weight: 400; margin-top: 12px; line-height: 1.4; }
.cc .pill { margin-top: auto; height: 42px; padding: 0 20px; font-size: 14px; align-self: flex-start; gap: 8px; }
.cc .qr-box { width: 128px; margin: 10px auto 0; border-radius: 14px; box-shadow: none; outline: 1.5px dashed var(--he-300); outline-offset: -8px; background: #F4F5F2; }
.cc .qr-box img { width: 26%; }
.cc-info { margin-top: 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px 30px; font-size: 14px; }
.cc-info dt { color: var(--muted); font-size: 13px; margin-bottom: 4px; }
.cc-info dd { font-size: 16px; }
.ctp-r h2 { font-size: clamp(26px, 2.6vw, 36px); font-weight: 500; }
.ctp-r .lead { margin: 14px 0 26px; font-size: 15px; color: var(--muted); }
.ctp-r .acc summary { font-size: 17px; padding: 20px 0; }
.ctp-r .acc .ans { font-size: 15px; padding-right: 20px; }

/* 结尾号召带 */
.cta-band { margin-top: 110px; background: var(--he-700); color: var(--bai); border-radius: 38px; padding: clamp(36px, 5vw, 72px); display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; position: relative; overflow: hidden; isolation: isolate; }
.cta-band .dm { position: absolute; z-index: -1; height: 150%; width: auto; right: 2%; top: -25%; opacity: .1; }
.cta-band h2 { font-size: clamp(26px, 3.2vw, 44px); font-weight: 500; line-height: 1.4; max-width: 16em; }
.cta-band .acts { display: flex; gap: 12px; flex-wrap: wrap; }

/* 导航当前页、深色文字页首 */
.site-nav a.is-here::after { transform: scaleX(1); }
.hd-ink:not(.is-stuck):not(.is-open) { color: var(--ye); }
.hd-ink:not(.is-stuck):not(.is-open) .brand-dark { opacity: 1; }
.hd-ink:not(.is-stuck):not(.is-open) .brand-light { opacity: 0; }
.hd-ink:not(.is-stuck):not(.is-open) .hd-tel { background: rgba(0, 48, 63, .08); box-shadow: inset 0 0 0 1px rgba(0, 48, 63, .35); color: var(--ye); }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .hd-in { gap: 16px; }
  .hd-cta { padding: 0 15px; }
  .site-nav { gap: 3px; }
  .site-nav a { padding: 8px 7px; font-size: 14px; }
  .steps { grid-template-columns: 210px minmax(0, 1fr); }
  .st-pane { grid-template-columns: minmax(0, 1fr) 300px; }
  .st-main { padding: 20px 28px; }
  .cols { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 36px; }
  .cols > div:nth-child(odd) { padding-left: 0; border-left: 0; }
  .tl { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tl > div:nth-child(even) { margin-top: 0; }
}
@media (max-width: 960px) {
  .ph { padding: 118px var(--pad) 150px; }
  .ph-in, .db-grid, .acc-wrap, .ctp { grid-template-columns: 1fr; }
  .ph-books, .portrait { justify-self: center; }
  .pull { margin-top: -90px; }
  .wcard, .tbl { border-radius: 24px; }
  .steps { grid-template-columns: 1fr; padding: 16px; }
  .st-pane { grid-template-columns: 1fr; }
  .st-nav { display: flex; overflow-x: auto; padding: 0 0 14px; border-right: 0; border-bottom: 1px solid var(--line); margin-bottom: 6px; }
  .st-nav button { white-space: nowrap; flex: none; }
  .st-main { padding: 22px 8px; }
  .st-main .st-body { padding-top: 22px; }
  .st-art { min-height: 260px; }
  .tr { grid-template-columns: 1fr; gap: 8px; padding: 20px; }
  .bookcard, .bookcard:nth-child(even) { grid-template-columns: 1fr; }
  .bookcard .bk, .bookcard:nth-child(even) .bk { order: 0; max-width: 260px; }
  .route { grid-template-columns: 1fr; }
  .plist { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 16px; }
  .pcard:nth-child(3n+2) { margin-top: 0; }
  .pcard:nth-child(even) { margin-top: 40px; }
  .cc-row { grid-template-columns: 1fr; }
  .cc { min-height: 0; }
  .ct-wrap { padding: 100px var(--pad) 90px; }
  .blk { margin-top: 80px; }
  .acc .ans { padding-right: 0; }
}
@media (max-width: 600px) {
  .plist { grid-template-columns: 1fr; }
  .pcard:nth-child(even) { margin-top: 0; }
  .tl { grid-template-columns: 1fr; }
  .cols { grid-template-columns: 1fr; }
  .cols > div, .cols > div:nth-child(odd) { padding: 0; border-left: 0; }
  .wcard { padding: 32px 22px; }
  .cc-info { grid-template-columns: 1fr; }
  .acc summary { font-size: 17px; }
  .tabbar button { padding: 10px 16px; font-size: 14.5px; }
}
.cc .big{font-size:clamp(17px,1.5vw,21px);white-space:nowrap;letter-spacing:0}
@media(max-width:560px){.cc .big{font-size:22px}}

/* ---------- 第二轮内容升级：主张块、是/不是、路径图、子页 ---------- */
.claim-sec { background: var(--bai); padding: 100px 0 10px; }
.claim { position: relative; overflow: hidden; isolation: isolate; background: var(--ye); color: var(--bai); border-radius: 40px; padding: clamp(36px, 5vw, 76px); display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(28px, 5vw, 72px); align-items: center; }
.claim .dm { position: absolute; z-index: -1; height: 130%; width: auto; right: -2%; top: -15%; opacity: .06; }
.claim .eb { color: var(--ye-200); }
.claim blockquote { margin: 14px 0 0; font-size: clamp(28px, 3.4vw, 48px); line-height: 1.5; letter-spacing: .02em; }
.claim .ctx { margin-top: 26px; font-size: 16px; line-height: 2; color: var(--chenwu); }
.claim .ctx a { text-decoration: underline; text-underline-offset: 4px; color: var(--cheng); }
.claim .nots { background: rgba(251, 250, 246, .08); border: 1px solid rgba(251, 250, 246, .22); border-radius: 28px; padding: 32px 34px; }
.claim .nots h3 { font-size: 20px; font-weight: 500; margin-bottom: 8px; }
.claim .nots li { padding: 14px 0; border-top: 1px solid rgba(251, 250, 246, .2); font-size: 16px; }
.claim .nots p { margin-top: 14px; font-size: 14.5px; line-height: 1.9; color: var(--chenwu); }
.entries { background: var(--bai); padding: 100px 0 40px; }
a.ccard { display: block; color: inherit; background: #fff; box-shadow: 0 30px 60px -48px rgba(0, 48, 63, .4); }
.entries .case-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.path-cta { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 48px; }
.yn { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.yn > div { border-radius: 30px; padding: 36px 38px; }
.yn .y { background: var(--he-700); color: var(--bai); }
.yn .n { background: var(--chengwu); color: var(--ye); }
.yn h3 { font-size: 22px; font-weight: 500; margin-bottom: 10px; }
.yn li { padding: 14px 0; font-size: 16px; line-height: 1.8; border-top: 1px solid rgba(251, 250, 246, .24); }
.yn .n li { border-top-color: rgba(0, 48, 63, .16); }
.lvl-main { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.lvl-main li { position: relative; }
.lvl-main li:not(:last-child)::after { content: ""; position: absolute; right: -13px; top: 50%; width: 10px; height: 10px; border-top: 2px solid var(--he); border-right: 2px solid var(--he); transform: translateY(-50%) rotate(45deg); z-index: 2; }
.lv { display: flex; flex-direction: column; gap: 6px; height: 100%; background: #fff; border-radius: 26px; padding: 26px 24px; box-shadow: 0 30px 60px -48px rgba(0, 48, 63, .45); transition: transform .4s var(--ease), background .3s; }
.lv:hover { transform: translateY(-6px); }
.lv i { font-style: normal; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--cheng); color: var(--ye); font-family: "Nunito", sans-serif; font-weight: 700; font-size: 15px; }
.lv b { font-size: 20px; font-weight: 500; margin-top: 10px; }
.lv span { font-size: 14.5px; color: var(--muted); line-height: 1.8; }
.lv em { font-style: normal; font-size: 12.5px; letter-spacing: .08em; color: var(--he-700); }
.lv.is-on { background: var(--ye); color: var(--bai); }
.lv.is-on span, .lv.is-on em { color: var(--ye-200); }
.lvl-branch { margin-top: 18px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 20px; align-items: center; }
.lv-dash { background: transparent; box-shadow: none; border: 2px dashed var(--he-300); }
.lv-dash.is-on { background: var(--ye); border-color: var(--ye); }
.lvl-branch > p { font-size: 15px; color: var(--muted); line-height: 1.9; }
.bk-claim { margin-top: 14px; font-size: 17px; font-weight: 500; color: var(--he-700); line-height: 1.7; }
.bk-for { margin-top: 8px; font-size: 14.5px; color: var(--muted); line-height: 1.8; }
.bk-for b { font-weight: 500; color: var(--ye); margin-right: 8px; }
.ft-sub { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 8px 26px; font-size: 14px; }
.ft-sub p { width: 100%; opacity: .6; letter-spacing: .08em; }
.ft-sub a:hover { text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 1000px) {
  .claim { grid-template-columns: 1fr; }
  .yn { grid-template-columns: 1fr; }
  .lvl-main { grid-template-columns: 1fr; }
  .lvl-main li:not(:last-child)::after { display: none; }
  .lvl-branch { grid-template-columns: 1fr; }
  .entries .case-grid { grid-template-columns: 1fr; }
}

/* ---------- 导航下拉：市场推广 ---------- */
.nav-dd { position: relative; display: flex; align-items: center; }
.nav-dd > a { padding-right: 6px; }
.dd-btn { width: 24px; height: 32px; border: 0; background: none; color: inherit; padding: 0; margin-left: -4px; display: grid; place-items: center; cursor: pointer; }
.dd-btn svg { transition: transform .3s var(--ease); }
.nav-dd:hover .dd-btn svg, .nav-dd.is-dd-open .dd-btn svg { transform: rotate(180deg); }
.dd-panel { position: absolute; top: 100%; right: -70px; width: min(680px, 92vw); margin-top: 14px; display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 8px; padding: 12px; background: var(--bai); color: var(--ye); border-radius: 24px; box-shadow: 0 30px 70px -20px rgba(0, 48, 63, .35), 0 0 0 1px rgba(0, 48, 63, .06); opacity: 0; visibility: hidden; transform: translateY(8px); transition: opacity .25s, transform .3s var(--ease), visibility .25s; }
.dd-panel::before { content: ""; position: absolute; left: 0; right: 0; top: -16px; height: 16px; }
.nav-dd:hover .dd-panel, .nav-dd:has(:focus-visible) .dd-panel, .nav-dd.is-dd-open .dd-panel { opacity: 1; visibility: visible; transform: none; }
.dd-lead { background: var(--chenwu); border-radius: 16px; padding: 22px 20px; display: flex; flex-direction: column; gap: 8px; }
.dd-lead .eb { font-size: 12px; letter-spacing: .2em; color: var(--ye-600); margin: 0; }
.site-nav .dd-lead h3 { font-size: 20px; font-weight: 500; margin: 0; }
.dd-lead p { font-size: 13px; line-height: 1.8; color: var(--ye-600); margin: 0; }
.site-nav .dd-panel a.dd-all { margin-top: auto; align-self: flex-start; font-size: 14px; padding: 8px 16px; border-radius: 99px; background: var(--ye); color: var(--bai); }
.dd-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px; }
.site-nav .dd-list a { display: grid; grid-template-columns: 30px minmax(0, 1fr); column-gap: 10px; align-items: center; padding: 12px 14px; border-radius: 14px; font-size: 15px; white-space: normal; transition: background .25s; }
.site-nav .dd-list a::after { display: none; }
.site-nav .dd-list a:hover, .site-nav .dd-list a.is-cur { background: var(--chengwu); }
.dd-list i { grid-row: span 2; width: 30px; height: 30px; border-radius: 50%; background: var(--chenwu); display: grid; place-items: center; font-style: normal; font-size: 13px; color: var(--ye); }
.dd-list a:hover i, .dd-list a.is-cur i { background: var(--cheng); }
.dd-list b { font-weight: 500; font-size: 15px; }
.dd-list span { font-size: 12px; color: var(--muted); }
@media (max-width: 1020px) {
  .site-nav > a:not(.nav-tel), .nav-dd > a { font-size: clamp(24px, 6.4vw, 32px); padding: 8px 0; }
  .site-nav > a.is-here, .nav-dd > a.is-here { color: var(--cheng); }
  .nav-dd { flex-wrap: wrap; justify-content: space-between; }
  .dd-btn { width: 44px; height: 44px; color: var(--bai); }
  .dd-panel { position: static; width: 100%; margin: 0; padding: 0; background: none; box-shadow: none; display: none; opacity: 1; visibility: visible; transform: none; color: var(--bai); flex-basis: 100%; }
  .nav-dd.is-dd-open .dd-panel { display: block; }
  .dd-panel::before, .dd-lead { display: none; }
  .dd-list { grid-template-columns: 1fr 1fr; gap: 0 12px; }
  .site-nav .dd-list a { grid-template-columns: 1fr; padding: 8px 0; font-size: 16px; letter-spacing: .04em; color: var(--bai); }
  .site-nav .dd-list a:hover, .site-nav .dd-list a.is-cur { background: none; color: var(--cheng); }
  .dd-list i, .dd-list span { display: none; }
  .site-nav .dd-list b { font-size: 18px; }
}

/* ---------- 浮动快捷图标 ---------- */
.float-bar a { position: relative; border: 0; }
.float-bar a::before { content: attr(data-tip); position: absolute; right: calc(100% + 12px); top: 50%; transform: translate(6px, -50%); padding: 7px 12px; border-radius: 99px; background: var(--ye); color: var(--bai); font-size: 13px; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity .2s, transform .3s var(--ease); }
.float-bar a:hover::before, .float-bar a:focus-visible::before { opacity: 1; transform: translate(0, -50%); }
.float-bar a:focus-visible { outline: 2px solid var(--cheng); outline-offset: 2px; }
.float-top { opacity: 0; visibility: hidden; transform: translateY(8px); transition: opacity .3s, visibility .3s, transform .3s var(--ease), background .25s; }
.float-bar.is-scrolled .float-top { opacity: 1; visibility: visible; transform: none; }
@media (max-width: 960px) {
  .float-bar { display: grid !important; top: auto; bottom: 18px; right: 14px; translate: none; gap: 10px; }
  .float-bar a:nth-child(-n+2) { display: none; }
  .float-bar a::before { display: none; }
  .float-bar a { width: 44px; height: 44px; }
}

/* ---------- 首页主图文案 ---------- */
.hero h1.h1-claim { margin-bottom: 24px; }
.hero h1.h1-claim span { display: block; margin: 0; }
.hero h1.h1-claim em { font-style: normal; }
.hero-sub { font-size: clamp(15px, 1.25vw, 18px); line-height: 2; color: var(--chenwu); max-width: 31em; margin-bottom: 38px; }
@media (max-width: 960px) { .hero h1.h1-claim { font-size: 8.4vw; } .hero-sub { font-size: 15px; line-height: 1.95; } }
.hero h1.h1-claim em.hl { background: linear-gradient(transparent 88%, var(--huang) 88%); color: var(--cheng); padding: 0 .04em; }

/* ---------- 首页创始人卡：夜青底 ---------- */
.founder-card.fc-dark { background: var(--ye); color: var(--bai); box-shadow: 0 40px 80px -40px rgba(0, 48, 63, .55); }
.fc-dark .fc-mark { opacity: .1; }
.fc-dark .eb { color: var(--cheng); }
.fc-dark h2 small { color: var(--chenwu); }
.fc-dark .fc-text { color: rgba(251, 250, 246, .86); }
.fc-dark .fc-tags li { box-shadow: inset 0 0 0 1px rgba(173, 196, 185, .6); color: var(--he-300); }
.fc-dark .fc-quote { color: var(--bai); padding-top: 26px; border-top: 1px solid rgba(251, 250, 246, .14); }
.fc-dark .fc-quote cite { color: var(--he-300); opacity: 1; }
.fc-dark .fc-right { background: var(--ye-600); }
.fc-dark .fc-right svg rect { fill: #0F3C4B; }
.fc-dark .fc-right svg circle { fill: #3C6863; }
.fc-dark .fc-right svg path { fill: #3C6863; }
.fc-dark .portrait-tag { background: rgba(251, 250, 246, .12); color: var(--chenwu); }
#idea .eb-lead { max-width: 42em; margin-left: auto; margin-right: auto; }
.claim { grid-template-columns: minmax(0, 1fr); }